diff --git a/core/huya/app_login.py b/core/huya/app_login.py
index bcaa1d9..9df356c 100644
--- a/core/huya/app_login.py
+++ b/core/huya/app_login.py
@@ -833,6 +833,7 @@ class HuyaAppPasswordLogin:
                     code="COOKIE_INCOMPLETE",
                 )
 
+            raw_cookie_str = cookie_str  # 补齐前 = App 原始登录凭据（16 字段 udb_*）
             # 补齐网页设备字段并修正 appId：真实网页登录态是 41 字段 +
             # udb_appid=5002，App 扫码链只产出 16 个 udb_* 认证字段且 appId=5008
             # （App 渠道），缺字段注入浏览器会导致 UDB SDK 判定设备态不完整。
@@ -857,6 +858,7 @@ class HuyaAppPasswordLogin:
             return HuyaLoginResult(
                 success=True,
                 cookie=cookie_str,
+                raw_cookie=raw_cookie_str,
                 message="App协议登录成功",
                 sdid=sdid,
                 context=pc.context,
diff --git a/core/huya/login.py b/core/huya/login.py
index 7edb24e..1094f2c 100644
--- a/core/huya/login.py
+++ b/core/huya/login.py
@@ -62,6 +62,7 @@ class HuyaLoginResult:
 
     success: bool
     cookie: str = ""
+    raw_cookie: str = ""  # App 原始登录凭据（不含网页设备字段），用于设备态重建/审计
     message: str = ""
     code: int | str = ""
     raw: dict | None = None
diff --git a/tests/test_migrations.py b/tests/test_migrations.py
index 61592c9..cdeb8da 100644
--- a/tests/test_migrations.py
+++ b/tests/test_migrations.py
@@ -22,7 +22,7 @@ TESTS_DIR = Path(__file__).resolve().parent
 PROJECT_ROOT = TESTS_DIR.parent
 VERSIONS_DIR = PROJECT_ROOT / "web" / "backend" / "migrations" / "versions"
 
-HEAD_REVISION = "20260901_0033"
+HEAD_REVISION = "20260901_0034"
 
 # 迁移新增、但不声明在模型里的复合查询索引。
 EXTRA_INDEXES = (
diff --git a/web/backend/migrations/versions/20260901_0034_huya_accounts_raw_cookie.py b/web/backend/migrations/versions/20260901_0034_huya_accounts_raw_cookie.py
new file mode 100644
index 0000000..778dacd
--- /dev/null
+++ b/web/backend/migrations/versions/20260901_0034_huya_accounts_raw_cookie.py
@@ -0,0 +1,40 @@
+"""huya_accounts 增加 raw_cookie：保存 App 登录原始凭据（与网页运行 ck 分离）。
+
+网页运行 ck（cookie 列）含本地随机生成的网页设备字段（guid/_qimei_uuid42/
+__yamid_new/game_did），若设备字段被风控标记无法还原纯净的登录凭据。
+raw_cookie 保存 16 字段的原始 App 登录态（udb_* 认证 + sdid/hdid + 匿名设备
+字段），用于重建设备态/审计/复核登录有效性。
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "20260901_0034"
+down_revision: str | None = "20260901_0033"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    columns = {
+        item["name"] for item in sa.inspect(bind).get_columns("huya_accounts")
+    }
+    if "raw_cookie" not in columns:
+        # MySQL 的 TEXT 列不允许 server_default；模型层 default="" 负责新行，
+        # 存量行为 NULL（读取处按空处理）。
+        op.add_column(
+            "huya_accounts",
+            sa.Column("raw_cookie", sa.Text(), nullable=True),
+        )
+
+
+def downgrade() -> None:
+    bind = op.get_bind()
+    columns = {
+        item["name"] for item in sa.inspect(bind).get_columns("huya_accounts")
+    }
+    if "raw_cookie" in columns:
+        op.drop_column("huya_accounts", "raw_cookie")
\ No newline at end of file
diff --git a/web/backend/models.py b/web/backend/models.py
index 96bd7dd..499c7f0 100644
--- a/web/backend/models.py
+++ b/web/backend/models.py
@@ -369,6 +369,10 @@ class HuyaAccount(Base):
     account_password: Mapped[str] = mapped_column(EncryptedText(), default="")
     nickname: Mapped[str] = mapped_column(String(128), default="")
     cookie: Mapped[str] = mapped_column(EncryptedText(), nullable=False)
+    # App 登录原始凭据（16 字段 udb_*，不含本地随机生成的网页设备字段）。
+    # 网页运行 ck（cookie 列）含 guid/_qimei_uuid42 等设备快照，若被风控标记
+    # 可从 raw_cookie 重建；也用于审计/复核登录有效性。
+    raw_cookie: Mapped[str] = mapped_column(EncryptedText(), nullable=False, default="")
     tag: Mapped[str] = mapped_column(String(64), default="")
     remark: Mapped[str] = mapped_column(String(256), default="")
     status: Mapped[str] = mapped_column(String(32), default="imported")
diff --git a/web/backend/routers/huya.py b/web/backend/routers/huya.py
index 6f38675..4256781 100644
--- a/web/backend/routers/huya.py
+++ b/web/backend/routers/huya.py
@@ -695,7 +695,11 @@ def app_password_login_account(
 
     try:
         account = upsert_huya_cookie(
-            db, result.cookie, tag=req.tag, username_hint=req.username
+            db,
+            result.cookie,
+            tag=req.tag,
+            username_hint=req.username,
+            raw_cookie=getattr(result, "raw_cookie", ""),
         )
         if hasattr(account, "account_password") and req.password:
             account.account_password = req.password
diff --git a/web/backend/services/huya_service.py b/web/backend/services/huya_service.py
index dd939ac..f75d3fa 100644
--- a/web/backend/services/huya_service.py
+++ b/web/backend/services/huya_service.py
@@ -303,9 +303,18 @@ def save_huya_login_cookie_to_account(
 
 
 def upsert_huya_cookie(
-    db: Session, cookie: str, tag: str = "", username_hint: str = ""
+    db: Session,
+    cookie: str,
+    tag: str = "",
+    username_hint: str = "",
+    raw_cookie: str = "",
 ) -> HuyaAccount:
-    """保存单条登录得到的虎牙 Cookie。"""
+    """保存单条登录得到的虎牙 Cookie。
+
+    Args:
+        cookie: 网页运行 Cookie（可能含本地生成的网页设备字段）。
+        raw_cookie: App 原始登录凭据（不含网页设备字段），单独落库供重建/审计。
+    """
     line = f"{username_hint}----{cookie}" if username_hint else cookie
     parsed = parse_huya_cookie_line(line)
     if not parsed:
@@ -313,6 +322,8 @@ def upsert_huya_cookie(
     account = _upsert_huya_account(
         db, parsed, tag=(tag or "").strip(), status="login_success"
     )
+    if raw_cookie:
+        account.raw_cookie = normalize_huya_cookie(raw_cookie)
     db.commit()
     db.refresh(account)
     return account