Abstract: The technique of capsulotomy for postoperative membrane cataract using Nd:YAG laser after various cataract extraction is studied in order to improve the therapeutic effects.In a postoperative stages ran ging 35 days～8 years,106 eyes with postoperative membrane cataract after various types of surgery were treated with 4mm～4.5mm diameter Nd:YAG laser posterior capsulotomy under dilated pupils.The results as follow:76 eyes (71.69%) were successfully opened with a single shot and 24 eyes(22.64%)op ened with 2～4 times shots.In a follow up ranged from 3 months～2 years,100 eyes(94.33%) were successfully opened on postoperative membrane with the suitable holes through Nd:YAG laser therapy,and the best corrected visual a cuity was improved ranged 0.6～1.5.Other 21 eyes had the corrected visual acuity lower than 1.0 because of the primary eye diseases that existed before the laser treatment.The complications included iris haemorrhage,slight damage on the surface of intraocular lens and breakup of anterior vitreous membrance,but had no in fluence upon the vision.It can be concluded that Nd:YAG laser capsul otomy is a safe and effective technique for postoperative membrane cataract. Handling of the best opportunity,accurate methods, and preventing of complication is the key of improving the effects.