diff --git a/src/main/java/com/dashboard/aws/lambda/handler/S3BatchToMySQLHandler.java b/src/main/java/com/dashboard/aws/lambda/handler/S3BatchToMySQLHandler.java
index 2cd38e2..883dbb8 100644
--- a/src/main/java/com/dashboard/aws/lambda/handler/S3BatchToMySQLHandler.java
+++ b/src/main/java/com/dashboard/aws/lambda/handler/S3BatchToMySQLHandler.java
@@ -126,11 +126,25 @@ public class S3BatchToMySQLHandler implements RequestHandler<Map<String, Object>
                 return;
             }
 
-            // 3. 按文件名排序（确保 00000001.csv, 00000002.csv 顺序处理）
-            Collections.sort(keys);
-            logger.info("[{}][{}] found {} files to process", DB_SCHEMA, table, keys.size());
+            // 3. 过滤掉 marker 文件
+            List<String> csvKeys = new ArrayList<>();
+            for (String key : keys) {
+                String fileName = extractFileName(key);
+                if (!fileName.startsWith(".")) {  // 跳过隐藏文件（如 .sync_to_db_processed）
+                    csvKeys.add(key);
+                }
+            }
+
+            if (csvKeys.isEmpty()) {
+                logger.warn("[{}][{}] no CSV files found for prefix: {}", DB_SCHEMA, table, prefix);
+                return;
+            }
+
+            // 4. 按文件名排序（确保 00000001.csv, 00000002.csv 顺序处理）
+            Collections.sort(csvKeys);
+            logger.info("[{}][{}] found {} CSV files to process", DB_SCHEMA, table, csvKeys.size());
 
-            // 4. 删除旧数据（只在第一次处理时执行）
+            // 5. 删除旧数据（只在第一次处理时执行）
             if (processedFiles.isEmpty()) {
                 int deleted = mysqlService.deleteBeforeDate(DB_SCHEMA, table, fileDate);
                 logger.info("[{}][{}] deleted {} records before {}", DB_SCHEMA, table, deleted, fileDate);
@@ -142,8 +156,8 @@ public class S3BatchToMySQLHandler implements RequestHandler<Map<String, Object>
             Map<String, Integer> progressThisTime = new HashMap<>(processedFiles);
             boolean allProcessed = true;
 
-            // 5. 依次处理每个CSV文件
-            for (String s3Key : keys) {
+            // 6. 依次处理每个CSV文件
+            for (String s3Key : csvKeys) {
                 // 处理文件前检查超时
                 long elapsed = System.currentTimeMillis() - overallStartTime;
                 if (elapsed >= timeoutThresholdMs) {
@@ -171,7 +185,7 @@ public class S3BatchToMySQLHandler implements RequestHandler<Map<String, Object>
                 logger.info("[{}][{}] file {} progress: {}/{} rows", DB_SCHEMA, table, fileName, newProcessedRows, newProcessedRows);
             }
 
-            // 6. 记录处理结果
+            // 7. 记录处理结果
             if (allProcessed) {
                 logger.info("[{}][{}] date processing completed", DB_SCHEMA, table);
             } else {
diff --git a/src/main/java/com/dashboard/aws/lambda/service/MySQLService.java b/src/main/java/com/dashboard/aws/lambda/service/MySQLService.java
index f9109ee..486f3fc 100644
--- a/src/main/java/com/dashboard/aws/lambda/service/MySQLService.java
+++ b/src/main/java/com/dashboard/aws/lambda/service/MySQLService.java
@@ -15,7 +15,7 @@ public class MySQLService {
     private static final String MYSQL_URL = System.getenv("DB_URL"); // 统一实例URL
     private static final String DB_USER = System.getenv("DB_USER");
     private static final String DB_PASSWORD = System.getenv("DB_PASSWORD");
-    private static final String batchSizeEnv = System.getenv("BATCH_SIZE");
+    private static final String S3_2_DB_BATCH_SIZE = System.getenv("S3_2_DB_BATCH_SIZE");
 
 
     /**
@@ -90,11 +90,11 @@ public class MySQLService {
 
         // 从环境变量读取批量大小，默认5000
         int batchSize = 5000;
-        if (batchSizeEnv != null && !batchSizeEnv.trim().isEmpty()) {
+        if (S3_2_DB_BATCH_SIZE != null && !S3_2_DB_BATCH_SIZE.trim().isEmpty()) {
             try {
-                batchSize = Integer.parseInt(batchSizeEnv.trim());
+                batchSize = Integer.parseInt(S3_2_DB_BATCH_SIZE.trim());
             } catch (NumberFormatException e) {
-                logger.warn("Invalid BATCH_SIZE: {}, using default 5000", batchSizeEnv);
+                logger.warn("Invalid BATCH_SIZE: {}, using default 5000", S3_2_DB_BATCH_SIZE);
             }
         }
 
diff --git a/src/test/java/com/dashboard/aws/lambda/S3CsvReorganizer.java b/src/test/java/com/dashboard/aws/lambda/S3CsvReorganizer.java
index 88db2bd..baed4bd 100644
--- a/src/test/java/com/dashboard/aws/lambda/S3CsvReorganizer.java
+++ b/src/test/java/com/dashboard/aws/lambda/S3CsvReorganizer.java
@@ -42,8 +42,8 @@ public class S3CsvReorganizer {
                 .credentialsProvider(
                         StaticCredentialsProvider.create(
                                 AwsBasicCredentials.create(
-                                        "AKA",
-                                        "IFwUPLd")
+                                        "AKI",
+                                        "IFwUPwW")
                         )
                 )
                 .build();
@@ -79,7 +79,7 @@ public class S3CsvReorganizer {
                 String basePath = matcher.group(1);   // dashboard-for-backup/dashboard_record_measure/
                 String date = matcher.group(2);       // 2025-12-25
 
-                String newKey = basePath + date + "/00000001.csv";
+                String newKey = basePath + date + "/001.csv";
 
                 // 如果目标文件和源文件相同则跳过
                 if (oldKey.equals(newKey)) {
@@ -122,7 +122,7 @@ public class S3CsvReorganizer {
         S3CsvReorganizer reorganizer = new S3CsvReorganizer();
 
         reorganizer.reorganize(
-                "dashboard_record_accumulate/"
+                "dashboard_record_measure/"
         );
     }
 }