diff --git a/backend/src/services/risk.service.ts b/backend/src/services/risk.service.ts
index d715bc6..19e9a5e 100644
--- a/backend/src/services/risk.service.ts
+++ b/backend/src/services/risk.service.ts
@@ -606,6 +606,25 @@ export async function runRiskDetection(orgId: string) {
     await prisma.riskItem.createMany({ data: createData })
   }
 
+  // 自动消除：PENDING 风险在最新检测结果中不再出现，说明问题已自然解决
+  // 例如：员工补签了合同，则旧的"未签合同"风险应自动标记为 RESOLVED
+  const newRiskKeys = new Set(nonMonthlyRisks.map((r) => `${r.employeeId}:${r.type}`))
+  const toResolve: string[] = []
+  for (const r of existingRisks) {
+    if (r.status === 'PENDING' && r.employeeId) {
+      const key = `${r.employeeId}:${r.type}`
+      if (!newRiskKeys.has(key)) {
+        toResolve.push(r.id)
+      }
+    }
+  }
+  if (toResolve.length > 0) {
+    await prisma.riskItem.updateMany({
+      where: { id: { in: toResolve } },
+      data: { status: 'RESOLVED', resolvedAt: new Date() },
+    })
+  }
+
   return toCreate.length
 }