diff --git a/astrbot/core/config/astrbot_config.py b/astrbot/core/config/astrbot_config.py
index e23c5961e..4d62becb5 100644
--- a/astrbot/core/config/astrbot_config.py
+++ b/astrbot/core/config/astrbot_config.py
@@ -8,11 +8,13 @@ from astrbot.core.utils.auth_password import (
     generate_dashboard_password,
     hash_dashboard_password,
     hash_legacy_dashboard_password,
+    validate_dashboard_password,
 )
 
 from .default import DEFAULT_CONFIG, DEFAULT_VALUE_MAP
 
 ASTRBOT_CONFIG_PATH = os.path.join(get_astrbot_data_path(), "cmd_config.json")
+DASHBOARD_INITIAL_PASSWORD_ENV = "ASTRBOT_DASHBOARD_INITIAL_PASSWORD"
 logger = logging.getLogger("astrbot")
 
 
@@ -97,7 +99,7 @@ class AstrBotConfig(dict):
         self.update(conf)
 
     def _reset_generated_dashboard_password(self, conf: dict) -> None:
-        generated_password = generate_dashboard_password()
+        generated_password = self._resolve_initial_dashboard_password()
         conf["dashboard"]["pbkdf2_password"] = hash_dashboard_password(
             generated_password
         )
@@ -117,6 +119,14 @@ class AstrBotConfig(dict):
             True,
         )
 
+    @staticmethod
+    def _resolve_initial_dashboard_password() -> str:
+        env_password = os.environ.get(DASHBOARD_INITIAL_PASSWORD_ENV)
+        if env_password is None:
+            return generate_dashboard_password()
+        validate_dashboard_password(env_password)
+        return env_password
+
     def _config_schema_to_default_config(self, schema: dict) -> dict:
         """将 Schema 转换成 Config"""
         conf = {}
diff --git a/tests/unit/test_config.py b/tests/unit/test_config.py
index c9c7e59b4..7afe82ebe 100644
--- a/tests/unit/test_config.py
+++ b/tests/unit/test_config.py
@@ -229,6 +229,53 @@ class TestAstrBotConfigLoad:
             generated_password,
         )
 
+    def test_empty_dashboard_password_uses_initial_password_env(
+        self, temp_config_path, monkeypatch
+    ):
+        """Test that the generated dashboard password can be provided by env."""
+        env_password = "CustomInitial123"
+        monkeypatch.setenv("ASTRBOT_DASHBOARD_INITIAL_PASSWORD", env_password)
+        default_config = {
+            "dashboard": {
+                "username": "astrbot",
+                "password": "",
+            },
+        }
+
+        config = AstrBotConfig(
+            config_path=temp_config_path,
+            default_config=default_config,
+        )
+
+        assert getattr(config, "_generated_dashboard_password", None) == env_password
+        assert verify_dashboard_password(
+            config["dashboard"]["pbkdf2_password"],
+            env_password,
+        )
+        assert verify_dashboard_password(
+            config["dashboard"]["password"],
+            env_password,
+        )
+        assert config["dashboard"]["password_change_required"] is True
+
+    def test_initial_dashboard_password_env_must_be_valid(
+        self, temp_config_path, monkeypatch
+    ):
+        """Test that weak env-provided initial passwords fail fast."""
+        monkeypatch.setenv("ASTRBOT_DASHBOARD_INITIAL_PASSWORD", "weak")
+        default_config = {
+            "dashboard": {
+                "username": "astrbot",
+                "password": "",
+            },
+        }
+
+        with pytest.raises(ValueError, match="Password must be at least"):
+            AstrBotConfig(
+                config_path=temp_config_path,
+                default_config=default_config,
+            )
+
     def test_legacy_password_change_required_rotates_and_keeps_config_flag(
         self, temp_config_path
     ):