diff --git a/routes/kv-token.js b/routes/kv-token.js
index bf3dd1c..d67c233 100644
--- a/routes/kv-token.js
+++ b/routes/kv-token.js
@@ -298,43 +298,25 @@ router.post(
             req.connection.socket?.remoteAddress ||
             "";
 
-        const results = [];
-        const errorList = [];
-
-        // 批量处理所有键值对
-        for (const [key, value] of Object.entries(data)) {
-            try {
-                const result = await kvStore.upsert(deviceId, key, value, creatorIp);
-                results.push({
-                    key: result.key,
-                    created: result.createdAt.getTime() === result.updatedAt.getTime(),
-                });
-                // 广播每个键的变更
-                const uuid = res.locals.device?.uuid;
-                if (uuid) {
-                    broadcastKeyChanged(uuid, {
-                        key: result.key,
-                        action: "upsert",
-                        created: result.createdAt.getTime() === result.updatedAt.getTime(),
-                        updatedAt: result.updatedAt,
-                        batch: true,
-                    });
-                }
-            } catch (error) {
-                errorList.push({
-                    key,
-                    error: error.message,
-                });
-            }
-        }
+        // 使用优化的批量upsert方法
+        const { results, errors: errorList } = await kvStore.batchUpsert(deviceId, data, creatorIp);
 
         return res.status(200).json({
-            deviceId,
-            total: Object.keys(data).length,
-            successful: results.length,
-            failed: errorList.length,
-            results,
-            errors: errorList.length > 0 ? errorList : undefined,
+            code: 200,
+            message: "批量导入成功",
+            data: {
+                deviceId,
+                summary: {
+                    total: Object.keys(data).length,
+                    successful: results.length,
+                    failed: errorList.length,
+                },
+                results: results.map(r => ({
+                    key: r.key,
+                    isNew: r.created,
+                })),
+                ...(errorList.length > 0 && { errors: errorList }),
+            },
         });
     })
 );
diff --git a/utils/kvStore.js b/utils/kvStore.js
index f521f36..a296383 100644
--- a/utils/kvStore.js
+++ b/utils/kvStore.js
@@ -102,6 +102,62 @@ class KVStore {
         };
     }
 
+    /**
+     * 批量创建或更新键值对（优化性能）
+     * @param {number} deviceId - 设备ID
+     * @param {object} data - 键值对数据 {key1: value1, key2: value2, ...}
+     * @param {string} creatorIp - 创建者IP，可选
+     * @returns {object} {results: Array, errors: Array}
+     */
+    async batchUpsert(deviceId, data, creatorIp = "") {
+        const results = [];
+        const errors = [];
+
+        // 使用事务处理所有操作
+        await prisma.$transaction(async (tx) => {
+            for (const [key, value] of Object.entries(data)) {
+                try {
+                    const item = await tx.kVStore.upsert({
+                        where: {
+                            deviceId_key: {
+                                deviceId: deviceId,
+                                key: key,
+                            },
+                        },
+                        update: {
+                            value,
+                            ...(creatorIp && {creatorIp}),
+                        },
+                        create: {
+                            deviceId: deviceId,
+                            key: key,
+                            value,
+                            creatorIp,
+                        },
+                    });
+
+                    results.push({
+                        key: item.key,
+                        created: item.createdAt.getTime() === item.updatedAt.getTime(),
+                        createdAt: item.createdAt,
+                        updatedAt: item.updatedAt,
+                    });
+                } catch (error) {
+                    errors.push({
+                        key,
+                        error: error.message,
+                    });
+                }
+            }
+        });
+
+        // 在事务完成后，一次性更新指标
+        const totalKeys = await prisma.kVStore.count();
+        keysTotal.set(totalKeys);
+
+        return { results, errors };
+    }
+
     /**
      * 通过设备ID和键名删除
      * @param {number} deviceId - 设备ID
@@ -219,6 +275,37 @@ class KVStore {
         });
         return count;
     }
+
+    /**
+     * 获取指定设备的统计信息
+     * @param {number} deviceId - 设备ID
+     * @returns {object} 统计信息
+     */
+    async getStats(deviceId) {
+        const [totalKeys, oldestKey, newestKey] = await Promise.all([
+            prisma.kVStore.count({
+                where: { deviceId },
+            }),
+            prisma.kVStore.findFirst({
+                where: { deviceId },
+                orderBy: { createdAt: "asc" },
+                select: { createdAt: true, key: true },
+            }),
+            prisma.kVStore.findFirst({
+                where: { deviceId },
+                orderBy: { updatedAt: "desc" },
+                select: { updatedAt: true, key: true },
+            }),
+        ]);
+
+        return {
+            totalKeys,
+            oldestKey: oldestKey?.key,
+            oldestCreatedAt: oldestKey?.createdAt,
+            newestKey: newestKey?.key,
+            newestUpdatedAt: newestKey?.updatedAt,
+        };
+    }
 }
 
 export default new KVStore();