diff --git a/bin/compiler.php b/bin/compiler.php
index 9c9c3b17..52c7580d 100755
--- a/bin/compiler.php
+++ b/bin/compiler.php
@@ -2,10 +2,10 @@
 <?php
 require __DIR__ . '/bootstrap.php';
 
+use PhpAot\Php\Exception\SyntaxError;
+use PhpAot\Php\Exception\Unsupported;
 use PhpAot\Php\FileScanner;
-use PhpAot\Php\SyntaxError;
 use PhpAot\Php\Translator;
-use PhpAot\Php\Unsupported;
 
 if (empty($argv[1])) {
     die("php compiler.php [file]\n");
diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 45df4451..d8739c5b 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -9,6 +9,8 @@
 namespace PhpAot\Php;
 
 use League\CLImate\CLImate;
+use PhpAot\Php\Exception\Redo;
+use PhpAot\Php\Exception\Skip;
 use PhpParser\Modifiers;
 use PhpParser\Node;
 use PhpParser\Node\Expr\Variable;
@@ -20,7 +22,6 @@ use PhpParser\Node\UnionType;
 use PhpParser\NodeAbstract;
 use PhpParser\Parser;
 use PhpParser\ParserFactory;
-use PhpParser\PrettyPrinter;
 
 class CompilerBase extends \PhpAot\Core\Translator
 {
@@ -652,7 +653,7 @@ class CompilerBase extends \PhpAot\Core\Translator
             if (isset($this->redoAfterDeclare[$name])) {
                 unset($this->redoAfterDeclare[$name]);
                 $this->climate->cyan('Received redo request, retrying...');
-                throw new RedoException();
+                throw new Redo();
             }
         }
 
@@ -675,7 +676,7 @@ class CompilerBase extends \PhpAot\Core\Translator
             $this->indentLevel++;
             try {
                 $stmts = $this->parseStmts($v->stmts);
-            } catch (SkipException $e) {
+            } catch (Skip $e) {
                 $stmts = '';
             }
             $this->indentLevel--;
@@ -1254,7 +1255,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $this->functionDef->returnType = $type;
         // 返回值变更，需要重新解析
         $this->climate->cyan('Return type changed, retrying...');
-        throw new RedoException();
+        throw new Redo();
     }
 
     protected function detectVarType($var): string
@@ -1741,7 +1742,7 @@ class CompilerBase extends \PhpAot\Core\Translator
                 and $this->functionDeclInFile[$name] === $this->file
                 and !$this->isNativeFunction($name)) {
                 $this->redoAfterDeclare[$name] = true;
-                throw new SkipException();
+                throw new Skip();
             }
             if ($this->isNativeFunction($name)) {
                 return $name;
diff --git a/src/Php/RedoException.php b/src/Php/Exception/Redo.php
similarity index 66%
rename from src/Php/RedoException.php
rename to src/Php/Exception/Redo.php
index a978c969..422f7a11 100644
--- a/src/Php/RedoException.php
+++ b/src/Php/Exception/Redo.php
@@ -6,8 +6,8 @@
  * @contact  service@swoole.com
  */
 
-namespace PhpAot\Php;
+namespace PhpAot\Php\Exception;
 
-class RedoException extends \RuntimeException
+class Redo extends \RuntimeException
 {
 }
diff --git a/src/Php/Exception/Skip.php b/src/Php/Exception/Skip.php
new file mode 100644
index 00000000..40077f38
--- /dev/null
+++ b/src/Php/Exception/Skip.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace PhpAot\Php\Exception;
+
+class Skip extends \RuntimeException
+{
+
+}
\ No newline at end of file
diff --git a/src/Php/SyntaxError.php b/src/Php/Exception/SyntaxError.php
similarity index 85%
rename from src/Php/SyntaxError.php
rename to src/Php/Exception/SyntaxError.php
index 147fdbe2..77e1ce08 100644
--- a/src/Php/SyntaxError.php
+++ b/src/Php/Exception/SyntaxError.php
@@ -6,7 +6,7 @@
  * @contact  service@swoole.com
  */
 
-namespace PhpAot\Php;
+namespace PhpAot\Php\Exception;
 
 class SyntaxError extends \RuntimeException
 {
diff --git a/src/Php/Unsupported.php b/src/Php/Exception/Unsupported.php
similarity index 85%
rename from src/Php/Unsupported.php
rename to src/Php/Exception/Unsupported.php
index c7c0d961..b11d5497 100644
--- a/src/Php/Unsupported.php
+++ b/src/Php/Exception/Unsupported.php
@@ -6,7 +6,7 @@
  * @contact  service@swoole.com
  */
 
-namespace PhpAot\Php;
+namespace PhpAot\Php\Exception;
 
 class Unsupported extends \RuntimeException
 {
diff --git a/src/Php/Preprocessor.php b/src/Php/Preprocessor.php
index 1f183f78..a5172481 100644
--- a/src/Php/Preprocessor.php
+++ b/src/Php/Preprocessor.php
@@ -8,6 +8,7 @@
 
 namespace PhpAot\Php;
 
+use PhpAot\Php\Exception\SyntaxError;
 use PhpParser\Node;
 use PhpParser\NodeFinder;
 use PhpParser\NodeTraverser;
diff --git a/src/Php/SkipException.php b/src/Php/SkipException.php
deleted file mode 100644
index 841dd930..00000000
--- a/src/Php/SkipException.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-namespace PhpAot\Php;
-
-class SkipException extends \RuntimeException
-{
-
-}
\ No newline at end of file
diff --git a/src/Php/Translator.php b/src/Php/Translator.php
index 355ce84a..fa857cdd 100644
--- a/src/Php/Translator.php
+++ b/src/Php/Translator.php
@@ -9,6 +9,7 @@
 namespace PhpAot\Php;
 
 use MJS\TopSort\Implementations\StringSort;
+use PhpAot\Php\Exception\Redo;
 use PhpParser\Modifiers;
 use PhpParser\Node;
 use PhpParser\Node\Stmt\Foreach_;
@@ -101,7 +102,7 @@ class Translator extends Preprocessor
                 $this->phpSrcFiles[] = $file;
 
                 return $cppFile;
-            } catch (RedoException $e) {
+            } catch (Redo $e) {
                 continue;
             }
         }
diff --git a/src/functions.php b/src/functions.php
index e43c6a00..7d2f371d 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -1,7 +1,7 @@
 <?php
 
 use PhpAot\Core\Translator;
-use PhpAot\Php\Unsupported;
+use PhpAot\Php\Exception\Unsupported;
 
 function abort($v)
 {