Abstract:  The incidence of dry eye is increasing, however, mechanisms of which have not been explained clearly. The dry eye symptoms after the eye surgeries, whether anterior and posterior segment operations or outer eye surgeries, was significantly make patients less satisfied for the surgery and gradually be concerned by ophthalmologists. The choosing of operative procedure and incision, duration time of operation, and perioperative drugs may influence dry eye’s incidence after surgeries. Therefore, the improving of the operative procedure and paying attention to the preioperative medicines are the effective measures to provent the postoperative dry eye.