diff --git a/Entity/BudgetArchive.cs b/Entity/BudgetArchive.cs
index af405ac..b8fd7df 100644
--- a/Entity/BudgetArchive.cs
+++ b/Entity/BudgetArchive.cs
@@ -73,6 +73,11 @@ public record BudgetArchiveContent
     /// </summary>
     public bool NoLimit { get; set; } = false;
 
+    /// <summary>
+    /// 硬性消费
+    /// </summary>
+    public bool IsMandatoryExpense { get; set; } = false;
+
     /// <summary>
     /// 描述说明
     /// </summary>
diff --git a/Entity/BudgetRecord.cs b/Entity/BudgetRecord.cs
index 2c62510..73696c5 100644
--- a/Entity/BudgetRecord.cs
+++ b/Entity/BudgetRecord.cs
@@ -39,6 +39,11 @@ public class BudgetRecord : BaseEntity
     /// 不记额预算（选中后该预算没有预算金额，发生的收入或支出直接在存款中加减）
     /// </summary>
     public bool NoLimit { get; set; } = false;
+
+    /// <summary>
+    /// 硬性消费（固定消费，如房租、水电等。当是当前年月且为硬性消费时，会根据经过的天数累加Current）
+    /// </summary>
+    public bool IsMandatoryExpense { get; set; } = false;
 }
 
 public enum BudgetPeriodType
diff --git a/Service/BudgetService.cs b/Service/BudgetService.cs
index 8e809d2..e3a6824 100644
--- a/Service/BudgetService.cs
+++ b/Service/BudgetService.cs
@@ -58,6 +58,7 @@ public class BudgetService(
                     Category = c.Category,
                     SelectedCategories = c.SelectedCategories,
                     NoLimit = c.NoLimit,
+                    IsMandatoryExpense = c.IsMandatoryExpense,
                     Description = c.Description,
                     PeriodStart = periodRange.start,
                     PeriodEnd = periodRange.end,
@@ -206,7 +207,8 @@ public class BudgetService(
                 Limit = budget.Limit,
                 Category = budget.Category,
                 SelectedCategories = selectedCategories,
-                StartDate = new DateTime(referenceDate.Year, referenceDate.Month, 1)
+                StartDate = new DateTime(referenceDate.Year, referenceDate.Month, 1),
+                IsMandatoryExpense = budget.IsMandatoryExpense
             }, referenceDate);
             if (budget.Type == statType)
             {
@@ -254,6 +256,7 @@ public class BudgetService(
             Category = b.Category,
             SelectedCategories = b.SelectedCategories,
             NoLimit = b.NoLimit,
+            IsMandatoryExpense = b.IsMandatoryExpense,
             Description = b.Description
         }).ToArray();
 
@@ -437,7 +440,40 @@ public class BudgetService(
         var referenceDate = now ?? DateTime.Now;
         var (startDate, endDate) = GetPeriodRange(budget.StartDate, budget.Type, referenceDate);
 
-        return await budgetRepository.GetCurrentAmountAsync(budget, startDate, endDate);
+        var actualAmount = await budgetRepository.GetCurrentAmountAsync(budget, startDate, endDate);
+
+        // 如果是硬性消费，且是当前年当前月，则根据经过的天数累加
+        if (actualAmount == 0
+            && budget.IsMandatoryExpense
+            && referenceDate.Year == startDate.Year
+            && referenceDate.Month == startDate.Month)
+        {
+            if (budget.Type == BudgetPeriodType.Month)
+            {
+                // 计算本月的天数
+                var daysInMonth = DateTime.DaysInMonth(referenceDate.Year, referenceDate.Month);
+                // 计算当前已经过的天数（包括今天）
+                var daysElapsed = referenceDate.Day;
+                // 根据预算金额和经过天数计算应累加的金额
+                var mandatoryAccumulation = budget.Limit * daysElapsed / daysInMonth;
+                // 返回实际消费和硬性消费累加中的较大值
+                return mandatoryAccumulation;
+            }
+            else if (budget.Type == BudgetPeriodType.Year)
+            {
+                // 计算本年的天数（考虑闰年）
+                var daysInYear = DateTime.IsLeapYear(referenceDate.Year) ? 366 : 365;
+                // 计算当前已经过的天数（包括今天）
+                var daysElapsed = referenceDate.DayOfYear;
+                // 根据预算金额和经过天数计算应累加的金额
+                var mandatoryAccumulation = budget.Limit * daysElapsed / daysInYear;
+                // 返回实际消费和硬性消费累加中的较大值
+                return mandatoryAccumulation;
+            }
+
+        }
+
+        return actualAmount;
     }
 
     internal static (DateTime start, DateTime end) GetPeriodRange(DateTime startDate, BudgetPeriodType type, DateTime referenceDate)
@@ -793,6 +829,7 @@ public record BudgetResult
     public DateTime? PeriodStart { get; set; }
     public DateTime? PeriodEnd { get; set; }
     public bool NoLimit { get; set; } = false;
+    public bool IsMandatoryExpense { get; set; } = false;
     public string Description { get; set; } = string.Empty;
 
     public static BudgetResult FromEntity(
@@ -825,6 +862,7 @@ public record BudgetResult
             PeriodStart = start,
             PeriodEnd = end,
             NoLimit = entity.NoLimit,
+            IsMandatoryExpense = entity.IsMandatoryExpense,
             Description = description
         };
     }
diff --git a/Web/src/components/Budget/BudgetCard.vue b/Web/src/components/Budget/BudgetCard.vue
index 5f87766..0d2bcec 100644
--- a/Web/src/components/Budget/BudgetCard.vue
+++ b/Web/src/components/Budget/BudgetCard.vue
@@ -14,6 +14,7 @@
                 class="status-tag"
               >
                 {{ budget.type === BudgetPeriodType.Year ? '年度' : '月度' }}
+                <span v-if="budget.isMandatoryExpense" class="mandatory-mark">📌</span>
               </van-tag>
             </slot>
             <h3 class="card-title">
@@ -58,6 +59,7 @@
                 class="status-tag"
               >
                 {{ budget.type === BudgetPeriodType.Year ? '年度' : '月度' }}
+                <span v-if="budget.isMandatoryExpense" class="mandatory-mark">📌</span>
               </van-tag>
             </slot>
             <h3 class="card-title" style="max-width: 120px">
@@ -672,6 +674,12 @@ const timePercentage = computed(() => {
   line-height: 1.4;
 }
 
+.mandatory-mark {
+  margin-left: 4px;
+  font-size: 14px;
+  display: inline-block;
+}
+
 /* @media (prefers-color-scheme: dark) {
   .budget-description {
     background-color: var(--van-background-2);
diff --git a/Web/src/components/Budget/BudgetChartAnalysis.vue b/Web/src/components/Budget/BudgetChartAnalysis.vue
index da15f59..fd4c0d6 100644
--- a/Web/src/components/Budget/BudgetChartAnalysis.vue
+++ b/Web/src/components/Budget/BudgetChartAnalysis.vue
@@ -74,7 +74,6 @@
         </div>
       </div>
       <div
-        v-if="activeTab === BudgetCategory.Expense"
         ref="burndownChartRef"
         class="chart-body burndown-chart"
       />
@@ -115,7 +114,6 @@
         </div>
       </div>
       <div
-        v-if="activeTab === BudgetCategory.Expense"
         ref="yearBurndownChartRef"
         class="chart-body burndown-chart"
       />
@@ -315,40 +313,21 @@ const updateCharts = () => {
       updateBarChart()
     }
 
-    // 仅支出时更新燃尽图
-    if (isExpense) {
-      if (!burndownChart && burndownChartRef.value) {
-        burndownChart = echarts.init(burndownChartRef.value)
-      }
-      updateBurndownChart()
-
-      if (!yearBurndownChart && yearBurndownChartRef.value) {
-        yearBurndownChart = echarts.init(yearBurndownChartRef.value)
-      }
-      updateYearBurndownChart()
-
-      if (!varianceChart && varianceChartRef.value) {
-        varianceChart = echarts.init(varianceChartRef.value)
-      }
-      updateVarianceChart()
-    } else {
-      // 非支出时销毁燃尽图实例
-      if (burndownChart) {
-        burndownChart.dispose()
-        burndownChart = null
-      }
-      if (yearBurndownChart) {
-        yearBurndownChart.dispose()
-        yearBurndownChart = null
-      }
-      // 收入/存款也可能需要偏差图，但目前逻辑主要针对支出
-      // 如果用户想看收入的偏差，也可以保留。我们之前的逻辑已经处理了收入的情况。
-      // 所以这里不应该销毁 varianceChart，而是应该更新它。
-      if (!varianceChart && varianceChartRef.value) {
-        varianceChart = echarts.init(varianceChartRef.value)
-      }
-      updateVarianceChart()
+    // 更新燃尽图/积累图
+    if (!burndownChart && burndownChartRef.value) {
+      burndownChart = echarts.init(burndownChartRef.value)
     }
+    updateBurndownChart()
+
+    if (!yearBurndownChart && yearBurndownChartRef.value) {
+      yearBurndownChart = echarts.init(yearBurndownChartRef.value)
+    }
+    updateYearBurndownChart()
+
+    if (!varianceChart && varianceChartRef.value) {
+      varianceChart = echarts.init(varianceChartRef.value)
+    }
+    updateVarianceChart()
   }
 }
 
@@ -517,8 +496,9 @@ const updateBurndownChart = () => {
   const month = today.getMonth()
   const daysInMonth = new Date(year, month + 1, 0).getDate()
   const currentDay = today.getDate()
+  const isExpense = props.activeTab === BudgetCategory.Expense
 
-  // 生成日期和理想燃尽线
+  // 生成日期和理想燃尽线/积累线
   const dates = []
   const idealBurndown = []
   const actualBurndown = []
@@ -528,16 +508,33 @@ const updateBurndownChart = () => {
 
   for (let i = 1; i <= daysInMonth; i++) {
     dates.push(`${i}日`)
-    // 理想燃尽：每天均匀消耗
-    const idealRemaining = Math.max(0, totalBudget * (1 - i / daysInMonth))
-    idealBurndown.push(Math.round(idealRemaining))
+    
+    if (isExpense) {
+      // 支出：燃尽图（向下走）
+      // 理想燃尽：每天均匀消耗
+      const idealRemaining = Math.max(0, totalBudget * (1 - i / daysInMonth))
+      idealBurndown.push(Math.round(idealRemaining))
 
-    // 实际燃尽：根据当前日期显示
-    if (i <= currentDay && totalBudget > 0) {
-      const actualRemaining = Math.max(0, totalBudget - (currentExpense * i / currentDay))
-      actualBurndown.push(Math.round(actualRemaining))
+      // 实际燃尽：根据当前日期显示
+      if (i <= currentDay && totalBudget > 0) {
+        const actualRemaining = Math.max(0, totalBudget - (currentExpense * i / currentDay))
+        actualBurndown.push(Math.round(actualRemaining))
+      } else {
+        actualBurndown.push(null)
+      }
     } else {
-      actualBurndown.push(null)
+      // 收入：积累图（向上走）
+      // 理想积累：每天均匀积累
+      const idealAccumulated = Math.min(totalBudget, totalBudget * (i / daysInMonth))
+      idealBurndown.push(Math.round(idealAccumulated))
+
+      // 实际积累：根据当前日期显示
+      if (i <= currentDay && totalBudget > 0) {
+        const actualAccumulated = Math.min(totalBudget, currentExpense * i / currentDay)
+        actualBurndown.push(Math.round(actualAccumulated))
+      } else {
+        actualBurndown.push(null)
+      }
     }
   }
 
@@ -546,6 +543,9 @@ const updateBurndownChart = () => {
   const splitLineColor = getCssVar('--chart-split')
   const axisLabelColor = getCssVar('--chart-text-muted')
 
+  const idealSeriesName = isExpense ? '理想燃尽' : '理想积累'
+  const actualSeriesName = isExpense ? '实际燃尽' : '实际积累'
+
   const option = {
     grid: {
       left: '3%',
@@ -599,7 +599,7 @@ const updateBurndownChart = () => {
     },
     series: [
       {
-        name: '理想燃尽',
+        name: idealSeriesName,
         type: 'line',
         data: idealBurndown,
         smooth: false,
@@ -614,7 +614,7 @@ const updateBurndownChart = () => {
         z: 1
       },
       {
-        name: '实际燃尽',
+        name: actualSeriesName,
         type: 'line',
         data: actualBurndown,
         smooth: false,
@@ -642,8 +642,9 @@ const updateYearBurndownChart = () => {
   const currentMonth = today.getMonth()
   const currentDay = today.getDate()
   const daysInCurrentMonth = new Date(year, currentMonth + 1, 0).getDate()
+  const isExpense = props.activeTab === BudgetCategory.Expense
 
-  // 生成月份和理想燃尽线
+  // 生成月份和理想燃尽线/积累线
   const months = []
   const idealBurndown = []
   const actualBurndown = []
@@ -678,16 +679,32 @@ const updateYearBurndownChart = () => {
     const daysInYearTotal = new Date(year, 12, 0).getDate() === 29 ? 366 : 365
     const yearProgress = i === 11 ? 1 : daysPassedInYear / daysInYearTotal
 
-    // 理想燃尽：每月均匀消耗
-    const idealRemaining = Math.max(0, totalBudget * (1 - (i + 1) / 12))
-    idealBurndown.push(Math.round(idealRemaining))
+    if (isExpense) {
+      // 支出：燃尽图（向下走）
+      // 理想燃尽：每月均匀消耗
+      const idealRemaining = Math.max(0, totalBudget * (1 - (i + 1) / 12))
+      idealBurndown.push(Math.round(idealRemaining))
 
-    // 实际燃尽：根据当前日期显示
-    if ((i < currentMonth || (i === currentMonth && currentDay > 0)) && totalBudget > 0) {
-      const actualRemaining = Math.max(0, totalBudget - (currentExpense * yearProgress))
-      actualBurndown.push(Math.round(actualRemaining))
+      // 实际燃尽：根据当前日期显示
+      if ((i < currentMonth || (i === currentMonth && currentDay > 0)) && totalBudget > 0) {
+        const actualRemaining = Math.max(0, totalBudget - (currentExpense * yearProgress))
+        actualBurndown.push(Math.round(actualRemaining))
+      } else {
+        actualBurndown.push(null)
+      }
     } else {
-      actualBurndown.push(null)
+      // 收入：积累图（向上走）
+      // 理想积累：每月均匀积累
+      const idealAccumulated = Math.min(totalBudget, totalBudget * ((i + 1) / 12))
+      idealBurndown.push(Math.round(idealAccumulated))
+
+      // 实际积累：根据当前日期显示
+      if ((i < currentMonth || (i === currentMonth && currentDay > 0)) && totalBudget > 0) {
+        const actualAccumulated = Math.min(totalBudget, currentExpense * yearProgress)
+        actualBurndown.push(Math.round(actualAccumulated))
+      } else {
+        actualBurndown.push(null)
+      }
     }
   }
 
@@ -696,6 +713,9 @@ const updateYearBurndownChart = () => {
   const splitLineColor = getCssVar('--chart-split')
   const axisLabelColor = getCssVar('--chart-text-muted')
 
+  const idealSeriesName = isExpense ? '理想燃尽' : '理想积累'
+  const actualSeriesName = isExpense ? '实际燃尽' : '实际积累'
+
   const option = {
     grid: {
       left: '3%',
@@ -747,7 +767,7 @@ const updateYearBurndownChart = () => {
     },
     series: [
       {
-        name: '理想燃尽',
+        name: idealSeriesName,
         type: 'line',
         data: idealBurndown,
         smooth: false,
@@ -762,7 +782,7 @@ const updateYearBurndownChart = () => {
         z: 1
       },
       {
-        name: '实际燃尽',
+        name: actualSeriesName,
         type: 'line',
         data: actualBurndown,
         smooth: false,
@@ -1037,13 +1057,13 @@ onMounted(() => {
       }
       updateBarChart()
 
-      // 仅支出时初始化燃尽图
-      if (isExpense && burndownChartRef.value) {
+      // 初始化燃尽图/积累图
+      if (burndownChartRef.value) {
         burndownChart = echarts.init(burndownChartRef.value)
         updateBurndownChart()
       }
 
-      if (isExpense && yearBurndownChartRef.value) {
+      if (yearBurndownChartRef.value) {
         yearBurndownChart = echarts.init(yearBurndownChartRef.value)
         updateYearBurndownChart()
       }
diff --git a/Web/src/components/Budget/BudgetEditPopup.vue b/Web/src/components/Budget/BudgetEditPopup.vue
index 8ac7a3d..4363edc 100644
--- a/Web/src/components/Budget/BudgetEditPopup.vue
+++ b/Web/src/components/Budget/BudgetEditPopup.vue
@@ -21,20 +21,46 @@
           <!-- 新增：不记额预算复选框 -->
           <van-field label="不记额预算">
             <template #input>
-              <van-checkbox v-model="form.noLimit" @update:model-value="onNoLimitChange">
-                不记额预算（仅限年度）
+              <van-checkbox
+                v-model="form.noLimit"
+                @update:model-value="onNoLimitChange"
+              >
+                不记额预算
               </van-checkbox>
             </template>
           </van-field>
-          <van-field name="type" label="统计周期">
+          <!-- 新增：硬性消费复选框 -->
+          <van-field label="硬性消费">
+            <template #input>
+              <div class="mandatory-wrapper">
+                <van-checkbox
+                  v-model="form.isMandatoryExpense"
+                  :disabled="form.noLimit"
+                >
+                  硬性消费
+                  <span class="mandatory-tip">
+                    当前周期 月/年 按天数自动累加
+                  </span>
+                </van-checkbox>
+              </div>
+            </template>
+          </van-field>
+          <van-field
+            name="type"
+            label="统计周期"
+          >
             <template #input>
               <van-radio-group
                 v-model="form.type"
                 direction="horizontal"
                 :disabled="isEdit || form.noLimit"
               >
-                <van-radio :name="BudgetPeriodType.Month"> 月 </van-radio>
-                <van-radio :name="BudgetPeriodType.Year"> 年 </van-radio>
+                <van-radio :name="BudgetPeriodType.Month">
+                  月
+                </van-radio>
+                <van-radio :name="BudgetPeriodType.Year">
+                  年
+                </van-radio>
               </van-radio-group>
             </template>
           </van-field>
@@ -60,7 +86,10 @@
               >
                 可多选分类
               </div>
-              <div v-else class="selected-categories">
+              <div
+                v-else
+                class="selected-categories"
+              >
                 <span class="ellipsis-text">
                   {{ form.selectedCategories.join('、') }}
                 </span>
@@ -78,7 +107,14 @@
       </van-form>
     </div>
     <template #footer>
-      <van-button block round type="primary" @click="onSubmit"> 保存预算 </van-button>
+      <van-button
+        block
+        round
+        type="primary"
+        @click="onSubmit"
+      >
+        保存预算
+      </van-button>
     </template>
   </PopupContainer>
 </template>
@@ -103,7 +139,8 @@ const form = reactive({
   category: BudgetCategory.Expense,
   limit: '',
   selectedCategories: [],
-  noLimit: false // 新增字段
+  noLimit: false, // 新增字段
+  isMandatoryExpense: false // 新增：硬性消费
 })
 
 const open = ({ data, isEditFlag, category }) => {
@@ -121,7 +158,8 @@ const open = ({ data, isEditFlag, category }) => {
       category: category,
       limit: data.limit,
       selectedCategories: data.selectedCategories ? [...data.selectedCategories] : [],
-      noLimit: data.noLimit || false // 新增
+      noLimit: data.noLimit || false, // 新增
+      isMandatoryExpense: data.isMandatoryExpense || false // 新增：硬性消费
     })
   } else {
     Object.assign(form, {
@@ -131,7 +169,8 @@ const open = ({ data, isEditFlag, category }) => {
       category: category,
       limit: '',
       selectedCategories: [],
-      noLimit: false // 新增
+      noLimit: false, // 新增
+      isMandatoryExpense: false // 新增：硬性消费
     })
   }
   visible.value = true
@@ -155,7 +194,8 @@ const onSubmit = async () => {
       ...form,
       limit: form.noLimit ? 0 : parseFloat(form.limit), // 不记额时金额为0
       selectedCategories: form.selectedCategories,
-      noLimit: form.noLimit // 新增
+      noLimit: form.noLimit, // 新增
+      isMandatoryExpense: form.isMandatoryExpense // 新增：硬性消费
     }
 
     const res = form.id ? await updateBudget(data) : await createBudget(data)
@@ -187,6 +227,8 @@ const onNoLimitChange = (value) => {
   if (value) {
     // 选中不记额时，自动设为年度预算
     form.type = BudgetPeriodType.Year
+    // 选中不记额时，清除硬性消费选择
+    form.isMandatoryExpense = false
   }
 }
 </script>
@@ -218,4 +260,16 @@ const onNoLimitChange = (value) => {
   color: var(--van-text-color-2);
   padding: 8px 16px;
 }
+
+.mandatory-wrapper {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.mandatory-tip {
+  font-size: 11px;
+  color: var(--van-text-color-3);
+  margin-left: 6px;
+}
 </style>
diff --git a/WebApi/Controllers/BudgetController.cs b/WebApi/Controllers/BudgetController.cs
index 8204260..89bab85 100644
--- a/WebApi/Controllers/BudgetController.cs
+++ b/WebApi/Controllers/BudgetController.cs
@@ -139,7 +139,8 @@ public class BudgetController(
                 Category = dto.Category,
                 SelectedCategories = dto.SelectedCategories != null ? string.Join(",", dto.SelectedCategories) : string.Empty,
                 StartDate = dto.StartDate ?? DateTime.Now,
-                NoLimit = dto.NoLimit
+                NoLimit = dto.NoLimit,
+                IsMandatoryExpense = dto.IsMandatoryExpense
             };
 
             var varidationError = await ValidateBudgetSelectedCategoriesAsync(budget);
@@ -182,6 +183,7 @@ public class BudgetController(
             budget.Category = dto.Category;
             budget.SelectedCategories = dto.SelectedCategories != null ? string.Join(",", dto.SelectedCategories) : string.Empty;
             budget.NoLimit = dto.NoLimit;
+            budget.IsMandatoryExpense = dto.IsMandatoryExpense;
             if (dto.StartDate.HasValue)
             {
                 budget.StartDate = dto.StartDate.Value;
diff --git a/WebApi/Controllers/Dto/BudgetDto.cs b/WebApi/Controllers/Dto/BudgetDto.cs
index 114e91d..281686d 100644
--- a/WebApi/Controllers/Dto/BudgetDto.cs
+++ b/WebApi/Controllers/Dto/BudgetDto.cs
@@ -9,6 +9,7 @@ public class CreateBudgetDto
     public string[] SelectedCategories { get; set; } = Array.Empty<string>();
     public DateTime? StartDate { get; set; }
     public bool NoLimit { get; set; } = false;
+    public bool IsMandatoryExpense { get; set; } = false;
 }
 
 public class UpdateBudgetDto : CreateBudgetDto