diff --git a/daxpay-platform/daxpay-platform-common/common-mybatis-plus/src/main/java/cn/daxpay/open/platform/common/mybatisplus/handler/type/JsonbStringTypeHandler.java b/daxpay-platform/daxpay-platform-common/common-mybatis-plus/src/main/java/cn/daxpay/open/platform/common/mybatisplus/handler/type/JsonbStringTypeHandler.java
index 0c0315e59..5bc3dca7d 100644
--- a/daxpay-platform/daxpay-platform-common/common-mybatis-plus/src/main/java/cn/daxpay/open/platform/common/mybatisplus/handler/type/JsonbStringTypeHandler.java
+++ b/daxpay-platform/daxpay-platform-common/common-mybatis-plus/src/main/java/cn/daxpay/open/platform/common/mybatisplus/handler/type/JsonbStringTypeHandler.java
@@ -10,6 +10,7 @@ import java.sql.CallableStatement;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Types;
 
 /// # PostgreSQL jsonb 字符串类型处理器。
 ///
@@ -27,6 +28,11 @@ public class JsonbStringTypeHandler extends BaseTypeHandler<String> {
     @Override
     public void setNonNullParameter(PreparedStatement ps, int i, String parameter, JdbcType jdbcType)
             throws SQLException {
+        // 空字符串不是合法 JSON, jsonb 列应存 NULL
+        if (parameter == null || parameter.isBlank()) {
+            ps.setNull(i, Types.OTHER);
+            return;
+        }
         PGobject jsonObject = new PGobject();
         jsonObject.setType("jsonb");
         jsonObject.setValue(parameter);