diff --git a/frontend/src/views/BudgetManagement.vue b/frontend/src/views/BudgetManagement.vue
index 3d41a8f2..ef759609 100644
--- a/frontend/src/views/BudgetManagement.vue
+++ b/frontend/src/views/BudgetManagement.vue
@@ -714,11 +714,11 @@
       <template v-if="diffData">
         <el-alert show-icon :closable="false" style="margin-bottom:12px;"><template #title><span>对比 {{ diffData.summary.version_a }} → {{ diffData.summary.version_b }}</span></template></el-alert>
         <el-table :data="diffData.diffs" border stripe size="small" max-height="500" style="width:100%;">
-          <el-table-column prop="kpi_code" label="编码" width="110" /><el-table-column prop="kpi_name" label="名称" min-width="140" /><el-table-column prop="period" label="期间" width="90" />
-          <el-table-column prop="old_value" label="旧值" width="110"><template #default="{ row }">{{ formatNumber(row.old_value) }}</template></el-table-column>
-          <el-table-column prop="new_value" label="新值" width="110"><template #default="{ row }">{{ formatNumber(row.new_value) }}</template></el-table-column>
-          <el-table-column prop="diff_value" label="差值" width="110"><template #default="{ row }"><span :style="{color: row.diff_value > 0 ? '#f56c6c' : row.diff_value < 0 ? '#67c23a' : '#999'}">{{ row.diff_value > 0 ? '+' : '' }}{{ formatNumber(row.diff_value) }}</span></template></el-table-column>
-          <el-table-column prop="diff_rate" label="变动率" width="90"><template #default="{ row }"><el-tag v-if="row.diff_rate === 0" size="small" type="info">持平</el-tag><el-tag v-else :type="row.diff_rate > 0 ? 'danger' : 'success'" size="small">{{ row.diff_rate > 0 ? '+' : '' }}{{ row.diff_rate }}%</el-tag></template></el-table-column>
+          <el-table-column prop="kpi_code" label="编码" width="110" /><el-table-column prop="kpi_name" label="名称" min-width="140" />
+          <el-table-column prop="version_a" label="旧值" width="110"><template #default="{ row }">{{ formatNumber(row.version_a) }}</template></el-table-column>
+          <el-table-column prop="version_b" label="新值" width="110"><template #default="{ row }">{{ formatNumber(row.version_b) }}</template></el-table-column>
+          <el-table-column prop="diff" label="差值" width="110"><template #default="{ row }"><span :style="{color: row.diff > 0 ? '#f56c6c' : row.diff < 0 ? '#67c23a' : '#999'}">{{ row.diff > 0 ? '+' : '' }}{{ formatNumber(row.diff) }}</span></template></el-table-column>
+          <el-table-column prop="diff_rate" label="变动率" width="100"><template #default="{ row }"><el-tag v-if="row.diff_rate === 0" size="small" type="info">持平</el-tag><el-tag v-else-if="row.diff_rate === null" size="small" type="info">-</el-tag><el-tag v-else :type="row.diff_rate > 0 ? 'danger' : 'success'" size="small">{{ row.diff_rate > 0 ? '+' : '' }}{{ row.diff_rate }}%</el-tag></template></el-table-column>
         </el-table>
       </template>
       <template #footer><el-button @click="showVersionDiff = false">关闭</el-button></template>
@@ -1089,7 +1089,7 @@ async function resubmitVersion(row: any) { try { await ElMessageBox.confirm(`确
 const versionYear = ref(currentYear); const versionsList = ref<any[]>([]); const versionsLoading = ref(false); const selectedVersions = ref<any[]>([]); const showVersionDiff = ref(false); const diffLoading = ref(false); const diffData = ref<any>(null); const currentVersion = ref('')
 async function loadVersions() { versionsLoading.value = true; try { const r: any = await budgetApi.versions({ year: versionYear.value, entity_id: getEntityId() }); const d = Array.isArray(r) ? r : (r.data || []); versionsList.value = d.map((v: any) => ({ ...v, _selected: false })); currentVersion.value = d[0]?.version || '' } catch (e) { ElMessage.error('加载版本列表失败') }; versionsLoading.value = false }
 function onVersionSelect(row: any) { selectedVersions.value = versionsList.value.filter((v: any) => v._selected); if (selectedVersions.value.length > 2) { row._selected = false; selectedVersions.value = versionsList.value.filter((v: any) => v._selected) } }
-async function loadVersionDiff() { if (selectedVersions.value.length !== 2) return; diffLoading.value = true; try { const [a, b] = selectedVersions.value; const r: any = await budgetApi.versionDiff({ version_a: a.version, version_b: b.version, year: versionYear.value }); diffData.value = r; showVersionDiff.value = true } catch (e) { ElMessage.error('加载版本对比失败') }; diffLoading.value = false }
+async function loadVersionDiff() { if (selectedVersions.value.length !== 2) return; diffLoading.value = true; try { const [a, b] = selectedVersions.value; const r: any = await budgetApi.versionDiff({ version_a: a.version, version_b: b.version, year: versionYear.value }); const diffs: any[] = (r && Array.isArray(r.diffs)) ? r.diffs : []; diffs.forEach((d: any) => { d.diff_rate = (typeof d.version_a === 'number' && d.version_a > 0 && typeof d.diff === 'number') ? Math.round(d.diff / d.version_a * 100) : null }); diffData.value = r; showVersionDiff.value = true } catch (e) { ElMessage.error('加载版本对比失败') }; diffLoading.value = false }
 
 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() {