diff --git a/scripts/translate_excel.py b/scripts/translate_excel.py
index c0df2f7..1d86fce 100755
--- a/scripts/translate_excel.py
+++ b/scripts/translate_excel.py
@@ -20,6 +20,10 @@ from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Any
 
+import sys
+sys.path.insert(0, str(Path(__file__).parent))
+from load_env import load_env
+load_env()  # 加载 .env 文件
 try:
     import google.generativeai as genai  # type: ignore
 except ImportError as exc:
@@ -96,6 +100,11 @@ def get_api_key() -> str:
     )
 
 
+def get_model_name() -> str:
+    import os
+    return os.getenv("GEMINI_MODEL", "gemini-2.0-flash-lite")
+
+
 def extract_chinese_content(
     input_path: Path,
     columns: list[str] | None = None,
@@ -160,9 +169,11 @@ def extract_chinese_content(
 
 def translate_entries(
     entries: list[TranslationEntry],
-    model_name: str = "gemini-2.0-flash-lite",
+    model_name: str | None = None,
     api_key: str | None = None,
 ) -> list[TranslationEntry]:
+    if model_name is None:
+        model_name = get_model_name()
     if not entries:
         print("✓ 没有需要翻译的内容")
         return entries
@@ -263,10 +274,12 @@ def translate_excel_file(
     output_path: Path | None = None,
     columns: list[str] | None = None,
     sheet_name: str | None = None,
-    model_name: str = "gemini-2.0-flash-lite",
+    model_name: str | None = None,
     api_key: str | None = None,
     dry_run: bool = False,
 ) -> Path:
+    if model_name is None:
+        model_name = get_model_name()
     if not output_path:
         output_path = input_path.parent / f"{input_path.stem}_en{input_path.suffix}"