diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index 60ce7d8832..4ee2caa4b7 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -342,6 +342,7 @@ public class SQLExprParser extends SQLParser {
             case OPEN:
             case REPEAT:
             case TABLE:
+            case TRUNCATE:
                 sqlExpr = new SQLIdentifierExpr(lexer.stringVal());
                 lexer.nextToken();
                 break;
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_25.java b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_25.java
new file mode 100644
index 0000000000..2d88cd1891
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_25.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 1999-2101 Alibaba Group Holding Ltd.
+ *
+ * Licensed 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 com.alibaba.druid.bvt.sql.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+
+public class MySqlSelectTest_25 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "select truncate(AVG(mark),2) from tabName where spu = ? and is_delete=0 and is_check = '2'";
+
+        
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        System.out.println("Tables : " + visitor.getTables());
+        System.out.println("fields : " + visitor.getColumns());
+        System.out.println("coditions : " + visitor.getConditions());
+        System.out.println("orderBy : " + visitor.getOrderByColumns());
+        
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(4, visitor.getColumns().size());
+        Assert.assertEquals(3, visitor.getConditions().size());
+        Assert.assertEquals(0, visitor.getOrderByColumns().size());
+        
+        {
+            String output = SQLUtils.toMySqlString(stmt);
+            Assert.assertEquals("SELECT truncate(AVG(mark), 2)"
+                    + "\nFROM tabName"
+                    + "\nWHERE spu = ?"
+                    + "\n\tAND is_delete = 0"
+                    + "\n\tAND is_check = '2'", //
+                                output);
+        }
+        {
+            String output = SQLUtils.toMySqlString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
+            Assert.assertEquals("select truncate(avg(mark), 2)"
+                    + "\nfrom tabName"
+                    + "\nwhere spu = ?"
+                    + "\n\tand is_delete = 0"
+                    + "\n\tand is_check = '2'", //
+                                output);
+        }
+    }
+    
+    
+    
+}