diff --git a/backend/internal/model/user.go b/backend/internal/model/user.go
index 33f8095..2726695 100644
--- a/backend/internal/model/user.go
+++ b/backend/internal/model/user.go
@@ -15,8 +15,9 @@ type User struct {
 	RenterGrowthPoints   int64  `gorm:"not null;default:0;index:idx_users_renter_growth_level,priority:2" json:"renter_growth_points"`
 	RenterGrowthLevel    string `gorm:"size:32;not null;default:'normal';index:idx_users_renter_growth_level,priority:1" json:"renter_growth_level"`
 	Status               string `gorm:"size:32;not null;default:'active'" json:"status"`
-	// 会话版本：默认与 users.token_version 列默认值保持一致，递增后旧令牌失效。
-	TokenVersion int64 `gorm:"not null;default:1" json:"-"`
+	// 会话版本：递增后该用户已签发的全部令牌立即失效。
+	// 默认值对齐迁移 000052 的 users.token_version DEFAULT 0。
+	TokenVersion int64 `gorm:"not null;default:0" json:"-"`
 	// 注册归因：注册时由前端携带的推广短码。
 	RegisterTrackCode string     `gorm:"size:64;index:idx_users_register_track_code" json:"register_track_code,omitempty"`
 	LastLoginAt       *time.Time `json:"last_login_at"`
diff --git a/backend/internal/modules/auth/repository.go b/backend/internal/modules/auth/repository.go
index a61f425..4cebfec 100644
--- a/backend/internal/modules/auth/repository.go
+++ b/backend/internal/modules/auth/repository.go
@@ -83,7 +83,6 @@ func (r *UserRepository) FindOrCreateByPhone(ctx context.Context, phone string,
 		CreditScore:       100,
 		Status:            "active",
 		RegisterTrackCode: code,
-		TokenVersion:      1,
 		LastLoginAt:       &now,
 	}
 
@@ -138,7 +137,6 @@ func (r *UserRepository) RegisterWithPassword(ctx context.Context, phone string,
 		CreditScore:       100,
 		Status:            "active",
 		RegisterTrackCode: code,
-		TokenVersion:      1,
 		LastLoginAt:       &now,
 	}