diff --git a/sqlTranslate/.idea/workspace.xml b/sqlTranslate/.idea/workspace.xml
index c3aaaf2ce..1c09af0fb 100644
--- a/sqlTranslate/.idea/workspace.xml
+++ b/sqlTranslate/.idea/workspace.xml
@@ -4,12 +4,8 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add update ast class">
-      <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/Lexer/OracleLexer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Lexer/OracleLexer.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/OracleParser.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Parser/OracleParser.java" afterDir="false" />
+    <list default="true" id="d8d12963-4777-48e3-9669-309cf5e41d60" name="更改" comment="add update convert rules">
+      <change beforePath="$PROJECT_DIR$/src/main/java/Document/Todolist" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/Document/Todolist" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -415,7 +411,14 @@
       <option name="project" value="LOCAL" />
       <updated>1726149015586</updated>
     </task>
-    <option name="localTasksCounter" value="45" />
+    <task id="LOCAL-00045" summary="add update convert rules">
+      <created>1726151534112</created>
+      <option name="number" value="00045" />
+      <option name="presentableId" value="LOCAL-00045" />
+      <option name="project" value="LOCAL" />
+      <updated>1726151534112</updated>
+    </task>
+    <option name="localTasksCounter" value="46" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -454,7 +457,8 @@
     <MESSAGE value="refractor" />
     <MESSAGE value="add select convert rules" />
     <MESSAGE value="add update ast class" />
-    <option name="LAST_COMMIT_MESSAGE" value="add update ast class" />
+    <MESSAGE value="add update convert rules" />
+    <option name="LAST_COMMIT_MESSAGE" value="add update convert rules" />
   </component>
   <component name="XDebuggerManager">
     <watches-manager>
diff --git a/sqlTranslate/src/main/java/Document/Todolist b/sqlTranslate/src/main/java/Document/Todolist
index 71210ee56..a00b01667 100644
--- a/sqlTranslate/src/main/java/Document/Todolist
+++ b/sqlTranslate/src/main/java/Document/Todolist
@@ -6,7 +6,7 @@ Operation
  union 1
  insert into 1
  update... set 1
- delete
+ delete 1
  if... elsif... else... end if
  case... when... then 1
  loop... end loop
diff --git a/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteConditionNode.java b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteConditionNode.java
new file mode 100644
index 000000000..1d8dae887
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteConditionNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Delete;
+
+import Lexer.Token;
+import Parser.AST.ASTNode;
+
+import java.util.List;
+
+public class DeleteConditionNode extends ASTNode {
+    public DeleteConditionNode(ASTNode node) {
+        super(node);
+    }
+
+    public DeleteConditionNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteEndNode.java b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteEndNode.java
new file mode 100644
index 000000000..0b21940c7
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteEndNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Delete;
+
+import Lexer.Token;
+import Parser.AST.ASTNode;
+
+import java.util.List;
+
+public class DeleteEndNode extends ASTNode {
+    public DeleteEndNode(ASTNode node) {
+        super(node);
+    }
+
+    public DeleteEndNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString());
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteNode.java b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteNode.java
new file mode 100644
index 000000000..a9496e6ad
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteNode.java
@@ -0,0 +1,23 @@
+package Parser.AST.Delete;
+
+import Lexer.Token;
+import Parser.AST.ASTNode;
+
+import java.util.List;
+
+public class DeleteNode extends ASTNode {
+    public DeleteNode(ASTNode node) {
+        super(node);
+    }
+    public DeleteNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}
diff --git a/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteObjNode.java b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteObjNode.java
new file mode 100644
index 000000000..e8fbd54bc
--- /dev/null
+++ b/sqlTranslate/src/main/java/Parser/AST/Delete/DeleteObjNode.java
@@ -0,0 +1,24 @@
+package Parser.AST.Delete;
+
+import Lexer.Token;
+import Parser.AST.ASTNode;
+
+import java.util.List;
+
+public class DeleteObjNode extends ASTNode {
+    public DeleteObjNode(ASTNode node) {
+        super(node);
+    }
+
+    public DeleteObjNode(List<Token> tokens) {
+        super(tokens);
+    }
+
+    @Override
+    public void visit(ASTNode node, StringBuilder queryString) {
+        queryString.append(toString() + " ");
+        for (ASTNode child : getChildren()) {
+            child.visit(child, queryString);
+        }
+    }
+}