? Double eyelid surgery can't be done during menstruation, and many cosmetic and plastic surgery can't be done during menstruation. In addition, double eyelid incision is not allowed in the following situations. 1, pregnancy or menstrual period, due to medication and coagulation disorders, so as not to affect the fetus or surgical bleeding. 2, severe scar constitution, or abnormal coagulation mechanism should be explained to the doctor in advance. 3. Patients with intraocular and extraocular infections should be cured before operation. 4, in the past surgery, clear allergic to local anesthetic or anti-anesthetic should inform the surgeon. 5, knowing that surgery can not achieve the expected results, should be treated with caution. 6./kloc-Children under 0/3 do not advocate double eyelid surgery in the sense of pure plastic surgery. 7. Is there any infection? Mental illness or mental defect or mental instability.