diff --git a/pets-be/internal/database/database.go b/pets-be/internal/database/database.go
index 279d83e..1ceb88d 100644
--- a/pets-be/internal/database/database.go
+++ b/pets-be/internal/database/database.go
@@ -25,6 +25,10 @@ func New(cfg *config.Config) (*gorm.DB, error) {
 			TablePrefix:   "sundynix_",
 			SingularTable: false,
 		},
+		// 关联在 Go 层管，不靠库级外键。迁移期建外键时 MySQL 会为外键列自动
+		// 补一个索引，和字段上的 `index` tag 撞成同名索引，父子表同迁时第二次
+		// 建索引报 1061 duplicate。关掉外键约束创建，索引就只由 index tag 建一次
+		DisableForeignKeyConstraintWhenMigrating: true,
 		Logger: logger.Default.LogMode(logLevel),
 	})
 	if err != nil {
diff --git a/pets-be/internal/handler/pet.go b/pets-be/internal/handler/pet.go
index d32a4f4..6aa8546 100644
--- a/pets-be/internal/handler/pet.go
+++ b/pets-be/internal/handler/pet.go
@@ -126,6 +126,18 @@ func (h *Handler) UpdatePet(c *gin.Context) {
 	if req.Breed != "" {
 		fields["breed"] = req.Breed
 	}
+	// 生日和到家日期是日期列，得先解析成 time。之前漏了这两个，
+	// 导致编辑档案时改到家日期不落库（建档走 toInput 才正常）
+	if req.Birthday != "" {
+		if t, err := time.ParseInLocation("2006-01-02", req.Birthday, time.Local); err == nil {
+			fields["birthday"] = t
+		}
+	}
+	if req.ArrivedAt != "" {
+		if t, err := time.ParseInLocation("2006-01-02", req.ArrivedAt, time.Local); err == nil && !t.After(time.Now()) {
+			fields["arrived_at"] = t
+		}
+	}
 	if req.AvatarFileID != "" {
 		fields["avatar_file_id"] = req.AvatarFileID
 	}