diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index c4c5ab721..ce358510a 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,11 +4,9 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="revise create table document">
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="revise">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Generator/OpenGaussGenerator.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Generator/OpenGaussGenerator.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Main.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/Parser/AST/AlterTable/AlterAddColumnNode.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/AST/AlterTable/AlterAddColumnNode.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -107,13 +105,6 @@
       <option name="presentableId" value="Default" />
       <updated>1723106789329</updated>
     </task>
-    <task id="LOCAL-00003" summary="AST node">
-      <created>1723871742424</created>
-      <option name="number" value="00003" />
-      <option name="presentableId" value="LOCAL-00003" />
-      <option name="project" value="LOCAL" />
-      <updated>1723871742424</updated>
-    </task>
     <task id="LOCAL-00004" summary="add AST node">
       <created>1723992163694</created>
       <option name="number" value="00004" />
@@ -450,7 +441,14 @@
       <option name="project" value="LOCAL" />
       <updated>1726154479052</updated>
     </task>
-    <option name="localTasksCounter" value="52" />
+    <task id="LOCAL-00052" summary="revise">
+      <created>1726197698087</created>
+      <option name="number" value="00052" />
+      <option name="presentableId" value="LOCAL-00052" />
+      <option name="project" value="LOCAL" />
+      <updated>1726197698087</updated>
+    </task>
+    <option name="localTasksCounter" value="53" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -475,7 +473,6 @@
     <MESSAGE value="add pattern of functions in select" />
     <MESSAGE value="add some comments" />
     <MESSAGE value="add parseSelect" />
-    <MESSAGE value="revise" />
     <MESSAGE value="add join pattern" />
     <MESSAGE value="add join class" />
     <MESSAGE value="add join" />
@@ -490,7 +487,8 @@
     <MESSAGE value="add alter table ast class" />
     <MESSAGE value="add alter table keywords" />
     <MESSAGE value="add alter table parser" />
-    <option name="LAST_COMMIT_MESSAGE" value="add alter table parser" />
+    <MESSAGE value="revise" />
+    <option name="LAST_COMMIT_MESSAGE" value="revise" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
diff --git a/sqlTranslate/src/main/java/Main.java b/sqlTranslate/src/main/java/Main.java
index f47f4eb17..3c26a5029 100644
--- a/sqlTranslate/src/main/java/Main.java
+++ b/sqlTranslate/src/main/java/Main.java
@@ -31,6 +31,7 @@ public class Main {
 //                "    WHERE d.department_name = 'Sales'\n" +
 //                ");";
         String sql = "ALTER TABLE employees ADD email VARCHAR2(100) Check (email != '12813@163.com');";
+//        String sql = "ALTER TABLE employees ADD CONSTRAINT emp_pk PRIMARY KEY (employee_id);";
         OracleLexer lexer = new OracleLexer(sql);
         lexer.printTokens();
         OracleParser parser = new OracleParser(lexer);
diff --git a/sqlTranslate/src/main/java/Parser/OracleParser.java b/sqlTranslate/src/main/java/Parser/OracleParser.java
index 109cbb58b..a63b2ec8c 100644
--- a/sqlTranslate/src/main/java/Parser/OracleParser.java
+++ b/sqlTranslate/src/main/java/Parser/OracleParser.java
@@ -4,10 +4,7 @@ import Lexer.OracleLexer;
 import Lexer.Token;
 import Parser.AST.ASTNode;
 import Exception.ParseFailedException;
-import Parser.AST.AlterTable.AlterAddColumnNode;
-import Parser.AST.AlterTable.AlterEndNode;
-import Parser.AST.AlterTable.AlterNode;
-import Parser.AST.AlterTable.AlterObjNode;
+import Parser.AST.AlterTable.*;
 import Parser.AST.CaseWhen.CaseConditionNode;
 import Parser.AST.CaseWhen.CaseElseNode;
 import Parser.AST.CaseWhen.CaseEndNode;
@@ -955,8 +952,9 @@ public class OracleParser {
             else if (parseTokens.get(i).hasType(Token.TokenType.KEYWORD) && parseTokens.get(i).getValue().equalsIgnoreCase("ADD")) {
                 // add column
                 if (i + 1 < parseTokens.size() && parseTokens.get(i + 1).hasType(Token.TokenType.IDENTIFIER)) {
-                    i++;
                     tokens = new ArrayList<>();
+                    tokens.add(parseTokens.get(i));
+                    i++;
                     boolean state = false;
                     AlterAddColumnNode child = new AlterAddColumnNode();
                     child.setName(parseTokens.get(i));
@@ -1014,9 +1012,10 @@ public class OracleParser {
                 }
                 // add constraint
                 else if (i + 1 < parseTokens.size() && parseTokens.get(i + 1).hasType(Token.TokenType.KEYWORD) && parseTokens.get(i + 1).getValue().equalsIgnoreCase("CONSTRAINT")) {
-                    i++;
                     tokens = new ArrayList<>();
                     tokens.add(parseTokens.get(i));
+                    i++;
+                    tokens.add(parseTokens.get(i));
                     for (int j = i + 1; j < parseTokens.size(); j++) {
                         /**
                          * CONSTRAINT pk_example PRIMARY KEY (column1, column2)
@@ -1055,13 +1054,15 @@ public class OracleParser {
                             }
                             continue;
                         }
-                        if ((parseTokens.get(j).hasType(Token.TokenType.SYMBOL) && parseTokens.get(j).getValue().equals(",")) ||
-                                (parseTokens.get(j).hasType(Token.TokenType.SYMBOL) && parseTokens.get(j).getValue().equals(")")) ) {
-                            i = j;
+                        if ((parseTokens.get(j).hasType(Token.TokenType.SYMBOL) && parseTokens.get(j).getValue().equals(";"))) {
+                            i = j - 1;
                             break;
                         }
                         tokens.add(parseTokens.get(j));
                     }
+                    ASTNode childNode = new AlterAddConstraintNode(tokens);
+                    currentNode.addChild(childNode);
+                    currentNode = childNode;
                 }
                 // error sql
                 else {