diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/MsOperationLog.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/MsOperationLog.java
index 277171ac..55d64cc0 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/MsOperationLog.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/MsOperationLog.java
@@ -29,4 +29,7 @@ public class MsOperationLog implements Serializable {
 
     @TableField("REMARK")
     private String remark;
+
+    @TableField("TABLE_NAME")
+    private String tableName;
 }
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/MsOperationLogServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/MsOperationLogServiceImpl.java
index 8e70e7fb..8efc9d86 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/MsOperationLogServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/service/impl/MsOperationLogServiceImpl.java
@@ -382,6 +382,7 @@ public class MsOperationLogServiceImpl implements IMsOperationLogService {
         MsOperationLog log = new MsOperationLog();
         log.setOperator(resolveOperator());
         log.setOperateTime(new Date());
+        log.setTableName(ENG_TABLE_NAME);
         log.setSource(StrUtil.trimToNull(source));
         log.setRemark(remark);
         return log;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/wq/service/impl/EnvWqDataServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_env/wq/service/impl/EnvWqDataServiceImpl.java
index 7ac6d0b1..6778bd2f 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/wq/service/impl/EnvWqDataServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/wq/service/impl/EnvWqDataServiceImpl.java
@@ -48,15 +48,6 @@ public class EnvWqDataServiceImpl implements EnvWqDataService {
 
     private static final LinkedHashMap<String, String> WQ_UPDATE_COLUMN_MAP = new LinkedHashMap<>();
     private static final Map<String, String> WQ_FIELD_MEANING_MAP = new LinkedHashMap<>();
-    private static final List<String> WQ_SNAPSHOT_COLUMNS = Arrays.asList(
-            "STCD", "TM", "DT", "DRTP", "YEAR", "MONTH",
-            "WTMP", "PH", "DOX", "CODMN", "CODCR", "BOD5", "NH3N", "TP", "TN",
-            "CU", "ZN", "F", "SE", "ARS", "HG", "CD", "CR6", "PB", "CN",
-            "VLPH", "OIL", "LAS", "S2", "FCG", "CL", "SO4", "NO3", "THRD",
-            "COND", "FE", "MN", "AL", "CHLA", "CLARITY", "TU", "CYANO",
-            "WQGRD", "SFDB", "WQ_SFDBHN_YS", "IS_DELETED"
-    );
-
     static {
         WQ_UPDATE_COLUMN_MAP.put("wtmp", "WTMP");
         WQ_UPDATE_COLUMN_MAP.put("ph", "PH");
@@ -144,8 +135,6 @@ public class EnvWqDataServiceImpl implements EnvWqDataService {
         WQ_FIELD_MEANING_MAP.put("WWQTG", "水功能区目标");
         WQ_FIELD_MEANING_MAP.put("SFDB", "是否达标");
         WQ_FIELD_MEANING_MAP.put("WQ_SFDBHN_YS", "是否达标湖内饮用水源");
-        WQ_FIELD_MEANING_MAP.put("ROW_KEY", "删除记录标识");
-        WQ_FIELD_MEANING_MAP.put("ROW_DATA", "删除记录数据");
     }
 
     @Resource
@@ -4176,12 +4165,19 @@ public class EnvWqDataServiceImpl implements EnvWqDataService {
         List<MsOperationLogDetail> details = new ArrayList<>();
         for (Map<String, Object> row : rows) {
             String stcd = asString(row.get("STCD"));
-            String rowKey = buildWqRowKey(tableName, row);
-            String rowSnapshot = buildWqRowSnapshot(row);
-            details.add(buildWqDetail(mainLog.getId(), tableName, stcd, "ROW_KEY",
-                    rowKey, rowKey, null, null, "删除记录"));
-            details.add(buildWqDetail(mainLog.getId(), tableName, stcd, "ROW_DATA",
-                    rowSnapshot, rowSnapshot, null, null, "删除记录"));
+            for (Map.Entry<String, Object> entry : row.entrySet()) {
+                String fieldCode = entry.getKey();
+                if (StrUtil.isBlank(fieldCode)) {
+                    continue;
+                }
+                Object oldValue = entry.getValue();
+                if (oldValue == null) {
+                    continue;
+                }
+                details.add(buildWqDetail(mainLog.getId(), tableName, stcd, fieldCode,
+                        oldValue, resolveWqDisplayValue(fieldCode, oldValue),
+                        null, null, "删除字段值"));
+            }
         }
         batchInsertWqLogDetails(details);
     }
@@ -4190,6 +4186,7 @@ public class EnvWqDataServiceImpl implements EnvWqDataService {
         MsOperationLog log = new MsOperationLog();
         log.setOperator(resolveLogOperator());
         log.setOperateTime(new Date());
+        log.setTableName(WQ_HOUR_TABLE_NAME);
         log.setSource(StrUtil.trimToNull(source));
         log.setRemark(remark);
         return log;
@@ -4222,34 +4219,12 @@ public class EnvWqDataServiceImpl implements EnvWqDataService {
         if (CollUtil.isEmpty(details)) {
             return;
         }
-        msOperationLogDetailMapper.insert(details);
-    }
-
-    private String buildWqRowKey(String tableName, Map<String, Object> row) {
-        if (WQ_HOUR_TABLE_NAME.equals(tableName)) {
-            return "STCD=" + formatLogValue(row.get("STCD")) + ", TM=" + formatLogValue(row.get("TM"));
-        }
-        if (WQ_DAY_TABLE_NAME.equals(tableName)) {
-            return "STCD=" + formatLogValue(row.get("STCD")) + ", DT=" + formatLogValue(row.get("DT"));
-        }
-        return "STCD=" + formatLogValue(row.get("STCD")) + ", DRTP=" + formatLogValue(row.get("DRTP")) +
-                ", YEAR=" + formatLogValue(row.get("YEAR")) + ", MONTH=" + formatLogValue(row.get("MONTH"));
-    }
-
-    private String buildWqRowSnapshot(Map<String, Object> row) {
-        if (row == null || row.isEmpty()) {
-            return null;
-        }
-        List<String> parts = new ArrayList<>();
-        for (String column : WQ_SNAPSHOT_COLUMNS) {
-            Object value = row.get(column);
-            String text = formatLogValue(value);
-            if (StrUtil.isBlank(text)) {
+        for (MsOperationLogDetail detail : details) {
+            if (detail == null) {
                 continue;
             }
-            parts.add(column + "=" + text);
+            msOperationLogDetailMapper.insert(detail);
         }
-        return parts.isEmpty() ? null : String.join("; ", parts);
     }
 
     private Object resolveWqDisplayValue(String fieldCode, Object rawValue) {