diff --git a/src/Translator.php b/src/Translator.php
index 542d0278..68041590 100644
--- a/src/Translator.php
+++ b/src/Translator.php
@@ -1735,10 +1735,12 @@ CODE;
 
     public function genIncludeHeaderFiles(): string
     {
-        $headers = array_merge($this->globalHeaders, [
-            "php_{$this->targetName}_func_decl.h",
-            "php_{$this->targetName}_data_decl.h",
-        ], $this->localHeaders);
+        $headers = array_unique(array_merge(
+            $this->globalHeaders,
+            ["php_{$this->targetName}_func_decl.h", "php_{$this->targetName}_data_decl.h"],
+            $this->localHeaders
+        ));
+
         $lines = [];
         foreach ($headers as $header) {
             $lines[] = '#include <' . $header . '>';
diff --git a/src/compiler.php b/src/compiler.php
index ce7977ae..5e69ea66 100644
--- a/src/compiler.php
+++ b/src/compiler.php
@@ -31,8 +31,8 @@ function main(int $argc, array $argv): void
         return;
     }
 
-    // 编译所有 C++ 文件
-    $objectFiles = $translator->compile($sourceFiles);
+    // 去重和编译所有 C++ 文件
+    $objectFiles = array_unique($translator->compile($sourceFiles));
     // 连接所有目标文件，生成可执行文件
     $binaryFile = $translator->build($objectFiles);
     // 如果指定了 --run / -r，编译完成后立即执行