diff --git a/sqli-repo/src/main/java/io/xream/sqli/repository/dao/DaoImpl.java b/sqli-repo/src/main/java/io/xream/sqli/repository/dao/DaoImpl.java
index dc632953..9b50d794 100644
--- a/sqli-repo/src/main/java/io/xream/sqli/repository/dao/DaoImpl.java
+++ b/sqli-repo/src/main/java/io/xream/sqli/repository/dao/DaoImpl.java
@@ -29,6 +29,7 @@
 import io.xream.sqli.parser.BeanElement;
 import io.xream.sqli.parser.Parsed;
 import io.xream.sqli.parser.Parser;
+import io.xream.sqli.repository.exception.SqliRumtimeException;
 import io.xream.sqli.repository.exception.TooManyResultsException;
 import io.xream.sqli.repository.init.SqlInit;
 import io.xream.sqli.repository.init.SqlTemplate;
@@ -39,6 +40,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.sql.SQLIntegrityConstraintViolationException;
 import java.util.*;
 
 /**
@@ -142,6 +144,14 @@ public boolean create(Object obj) {
             return this.jdbcHelper.create(isAutoIncreaseId,sql,valueList);
 
         } catch (Exception e) {
+            Throwable t = e.getCause();
+            if ( t != null &&
+                    t instanceof SQLIntegrityConstraintViolationException){
+                String msg = t.getMessage();
+                if (msg.contains("cannot be null")) {
+                    throw new SqliRumtimeException("Table of "+ Parser.get(clz).getTableName()+", " + msg);
+                }
+            }
             throw ExceptionTranslator.onRollback(obj, e, logger);
         }
 
diff --git a/sqli-repo/src/main/java/io/xream/sqli/repository/exception/SqliRumtimeException.java b/sqli-repo/src/main/java/io/xream/sqli/repository/exception/SqliRumtimeException.java
new file mode 100644
index 00000000..b5753730
--- /dev/null
+++ b/sqli-repo/src/main/java/io/xream/sqli/repository/exception/SqliRumtimeException.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 io.xream.sqli
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.xream.sqli.repository.exception;
+
+/**
+ * @author Sim
+ */
+public class SqliRumtimeException extends RuntimeException{
+
+    public SqliRumtimeException(String message) {
+        super(message);
+    }
+}