·AIM:To observe the clinical effects of four kinds of ptosis surgery.·METHODS:The operative procedure was improved continuously to explore the effective treatment of ptosis surgery.·RESULTS:The result of each operation had its advan-tages and complications.Levator plication was an ideal surgical method for the current.·CONCLUSION:Clinical practice of levator plication differs with previous theory which considered that with each 3-5mm skin shortening by moderate ligament of levator,drooping amount of 1mm was corrected.Upper eyelid can be lifted by collapsing levator tendon membrane on the superior margin of moderate ligament and the upper palpebral margin located 2mm above corneal limbus and recovered to the corneal limbus after surgery.·