diff --git a/frontend/src/components/charts/ProfitBreakdown.vue b/frontend/src/components/charts/ProfitBreakdown.vue
index 1ddb8e46..90ddb6eb 100644
--- a/frontend/src/components/charts/ProfitBreakdown.vue
+++ b/frontend/src/components/charts/ProfitBreakdown.vue
@@ -61,21 +61,24 @@
     <div v-if="prevRevenue" class="pb-compare">
       <div class="pb-compare-item">
         <span class="pb-compare-label">营收较上期</span>
-        <span :class="revChg >= 0 ? 'pb-pos' : 'pb-neg'">
+        <span v-if="revChg != null" :class="revChg >= 0 ? 'pb-pos' : 'pb-neg'">
           {{ revChg >= 0 ? '↑' : '↓' }} {{ (Math.abs(revChg) * 100).toFixed(1) }}%
         </span>
+        <span v-else style="color:#909399">缺上期数据</span>
       </div>
       <div class="pb-compare-item">
         <span class="pb-compare-label">净利润较上期</span>
-        <span :class="profitChg >= 0 ? 'pb-pos' : 'pb-neg'">
+        <span v-if="profitChg != null" :class="profitChg >= 0 ? 'pb-pos' : 'pb-neg'">
           {{ profitChg >= 0 ? '↑' : '↓' }} {{ (Math.abs(profitChg) * 100).toFixed(1) }}%
         </span>
+        <span v-else style="color:#909399">缺上期数据</span>
       </div>
       <div class="pb-compare-item">
         <span class="pb-compare-label">净利率较上期</span>
-        <span :class="rateChg >= 0 ? 'pb-pos' : 'pb-neg'">
+        <span v-if="rateChg != null" :class="rateChg >= 0 ? 'pb-pos' : 'pb-neg'">
           {{ rateChg >= 0 ? '↑' : '↓' }} {{ (Math.abs(rateChg) * 100).toFixed(1) }}%
         </span>
+        <span v-else style="color:#909399">缺上期数据</span>
       </div>
     </div>
 
@@ -129,19 +132,22 @@ const costRate = computed(() => {
   return (props.cost / props.revenue * 100).toFixed(1) + '%'
 })
 
-const revChg = computed(() => {
-  if (!props.prevRevenue) return 0
+// 缺失值 NULL 语义（财务裁定 2026-09-21 §2）：上期缺失/为 0 时返回 null，
+// 不得回落 0（0 会被显示成「持平」，把「无数据」当真实 0 参与同环比）。
+const revChg = computed<number | null>(() => {
+  if (props.prevRevenue == null || props.prevRevenue === 0) return null
   return (props.revenue - props.prevRevenue) / props.prevRevenue
 })
-const profitChg = computed(() => {
-  if (!props.prevProfit) return 0
+const profitChg = computed<number | null>(() => {
+  if (props.prevProfit == null || props.prevProfit === 0) return null
   return (props.profit - props.prevProfit) / Math.abs(props.prevProfit)
 })
-const rateChg = computed(() => {
-  if (!props.prevRevenue || !props.prevProfit) return 0
+const rateChg = computed<number | null>(() => {
+  if (props.prevRevenue == null || props.prevProfit == null || props.prevRevenue === 0) return null
   const cur = props.profit / props.revenue
   const prev = props.prevProfit / props.prevRevenue
-  return (cur - prev) / Math.abs(prev || 0.01)
+  if (prev === 0) return null
+  return (cur - prev) / Math.abs(prev)
 })
 
 const detailItems = computed(() => {
diff --git a/frontend/src/views/BudgetManagement.vue b/frontend/src/views/BudgetManagement.vue
index ef759609..50c5fc92 100644
--- a/frontend/src/views/BudgetManagement.vue
+++ b/frontend/src/views/BudgetManagement.vue
@@ -200,7 +200,7 @@
           </template></el-table-column>
           <el-table-column prop="actual_value" label="实际值" width="130"><template #default="{ row }">{{ formatNumber(row.actual_value, row.unit) }}</template></el-table-column>
           <el-table-column prop="deviation_value" label="偏差" width="130"><template #default="{ row }"><span :style="{color: row.deviation_value > 0 ? '#f56c6c' : row.deviation_value < 0 ? '#67c23a' : '#999'}">{{ row.deviation_value > 0 ? '+' : '' }}{{ formatNumber(row.deviation_value, row.unit) }}</span></template></el-table-column>
-          <el-table-column label="执行率" width="100"><template #default="{ row }"><el-progress :percentage="row.execution_rate || 0" :status="row.execution_rate > 100 ? 'exception' : row.execution_rate > 80 ? 'warning' : 'success'" :stroke-width="16" :text-inside="true" /></template></el-table-column>
+          <el-table-column label="执行率" width="100"><template #default="{ row }"><el-progress v-if="row.execution_rate != null" :percentage="row.execution_rate" :status="row.execution_rate > 100 ? 'exception' : row.execution_rate > 80 ? 'warning' : 'success'" :stroke-width="16" :text-inside="true" /><span v-else style="color:#909399">-</span></template></el-table-column>
           <el-table-column label="预警" width="80"><template #default="{ row }"><el-tag v-if="row.alert_level === 'red'" size="small" type="danger">严重</el-tag><el-tag v-else-if="row.alert_level === 'yellow'" size="small" type="warning">关注</el-tag><el-tag v-else size="small" type="success">正常</el-tag></template></el-table-column>
         </el-table>
 
@@ -1094,7 +1094,7 @@ async function loadVersionDiff() { if (selectedVersions.value.length !== 2) retu
 const execFilterYear = ref(currentYear); const execFilterMonth = ref(new Date().getMonth()); const execFilterDim = ref(''); const execLoading = ref(false); const execReport = ref<any[]>([]); const execSummaryCards = ref<any[]>([])
 async function loadExecutionReport() {
   execLoading.value = true
-  try { const r: any = await budgetApi.deviationReport({ year: execFilterYear.value, month: execFilterMonth.value, dimension: execFilterDim.value || undefined, hierarchical: true, entity_id: getEntityId() }); const items: any[] = r.items || []; const en = items.map((i: any) => ({ ...i, execution_rate: i.budget_value && i.budget_value > 0 ? Math.round((i.actual_value || 0) / i.budget_value * 100) : 0, deviation_value: (i.actual_value || 0) - (i.budget_value || 0) })); execReport.value = en; const hb = en.filter((i: any) => i.budget_value != null); const ob = en.filter((i: any) => i.is_over_budget); const ar = hb.length > 0 ? Math.round(hb.reduce((s, i) => s + (i.execution_rate || 0), 0) / hb.length) : 0; const tb = hb.reduce((s, i) => s + (i.budget_value || 0), 0); const ta = hb.reduce((s, i) => s + (i.actual_value || 0), 0); execSummaryCards.value = [{ label: '有预算KPI', value: `${hb.length}/${en.length}`, color: '#409eff' }, { label: '超预算KPI', value: ob.length.toString(), color: '#f56c6c' }, { label: '平均执行率', value: `${ar}%`, color: ar > 100 ? '#f56c6c' : '#67c23a' }, { label: '预算执行进度', value: tb > 0 ? `${Math.round(ta / tb * 100)}%` : '-', color: '#e6a23c' }] } catch (e) { ElMessage.error('加载执行报告失败') }
+  try { const r: any = await budgetApi.deviationReport({ year: execFilterYear.value, month: execFilterMonth.value, dimension: execFilterDim.value || undefined, hierarchical: true, entity_id: getEntityId() }); const items: any[] = r.items || []; const en = items.map((i: any) => ({ ...i, execution_rate: (i.budget_value && i.budget_value > 0 && i.actual_value != null) ? Math.round(i.actual_value / i.budget_value * 100) : null, deviation_value: i.actual_value != null ? i.actual_value - (i.budget_value ?? 0) : null })); execReport.value = en; const hb = en.filter((i: any) => i.budget_value != null); const ob = en.filter((i: any) => i.is_over_budget); const hbR = hb.filter((i: any) => i.execution_rate != null); const ar = hbR.length > 0 ? Math.round(hbR.reduce((s: number, i: any) => s + i.execution_rate, 0) / hbR.length) : null; const tb = hb.reduce((s, i) => s + (i.budget_value || 0), 0); const ta = hb.reduce((s, i) => s + (i.actual_value || 0), 0); execSummaryCards.value = [{ label: '有预算KPI', value: `${hb.length}/${en.length}`, color: '#409eff' }, { label: '超预算KPI', value: ob.length.toString(), color: '#f56c6c' }, { label: '平均执行率', value: ar == null ? '-' : `${ar}%`, color: (ar ?? 0) > 100 ? '#f56c6c' : '#67c23a' }, { label: '预算执行进度', value: tb > 0 ? `${Math.round(ta / tb * 100)}%` : '-', color: '#e6a23c' }] } catch (e) { ElMessage.error('加载执行报告失败') }
   execLoading.value = false
 }
 
diff --git a/frontend/src/views/DeviationDashboard.vue b/frontend/src/views/DeviationDashboard.vue
index 9ecd7d02..b87b18c2 100644
--- a/frontend/src/views/DeviationDashboard.vue
+++ b/frontend/src/views/DeviationDashboard.vue
@@ -342,19 +342,20 @@ async function loadTrend() {
         const keyB = b.period || ''
         return keyA.localeCompare(keyB)
       })
+    // 缺失值 NULL 语义（财务裁定 2026-09-21 §2）：actual/budget 缺失保留 null（不回落 0）
     trendData.value = monthly.map((i: any) => ({
       period: i.period,
-      actual: i.actual_value || 0,
-      budget: i.budget_value || 0,
+      actual: i.actual_value ?? null,
+      budget: i.budget_value ?? null,
       deviation: i.deviation_rate,
     }))
-    maxTrend.value = Math.max(...trendData.value.flatMap((d: any) => [d.actual, d.budget]), 1)
+    maxTrend.value = Math.max(...trendData.value.flatMap((d: any) => [d.actual ?? 0, d.budget ?? 0]), 1)
   } catch (e) { /* ignore */ }
   trendLoading.value = false
 }
 
-function barHeight(val: number, max: number) {
-  if (!max) return 0
+function barHeight(val: number | null, max: number) {
+  if (!max || val == null) return 0   // 缺失值 NULL 语义：不画柱，不以 0 参与
   return Math.max(4, (val / max) * 150)
 }
 
diff --git a/frontend/src/views/MyDashboard.vue b/frontend/src/views/MyDashboard.vue
index c52556f7..2bd33200 100644
--- a/frontend/src/views/MyDashboard.vue
+++ b/frontend/src/views/MyDashboard.vue
@@ -78,12 +78,15 @@
                 <span v-if="isStale(k)" class="kpi-stale-tag">非当期</span>{{ targetLabel(k) }} {{ k.target_value ?? '-' }}
               </div>
             </div>
+            <!-- 缺失值 NULL 语义（财务裁定 2026-09-21 §2）：actual 缺失时不得显示 0% 进度 -->
             <el-progress
-              :percentage="k.target_value ? Math.min(100, Math.round((k.actual_value || 0) / k.target_value * 100)) : 0"
+              v-if="k.actual_value != null && k.target_value"
+              :percentage="Math.min(100, Math.round(k.actual_value / k.target_value * 100))"
               :status="k.level === 'green' ? 'success' : k.level === 'red' ? 'exception' : undefined"
               :stroke-width="6"
               :show-text="false"
             />
+            <div v-else style="height:6px;line-height:6px;color:#c0c4cc;font-size:11px">—</div>
           </div>
         </div>
       </div>