Submerged eyelid surgery is one of the most common types of double eyelid surgery, which involves burying a suture directly between the skin and the eyelid plate through suture, so that the upper eyelid skin and the eyelid plate become adhesive and form a blepharoplasty effect, which is favored by many beauty seekers because only suture is needed during the surgery and no incision is required. The operation of buried eyelid surgery is relatively simple, the recovery time is very short, and the postoperative effect is natural, which will not affect normal study and work. However, some people, after having double eyelid surgery, may have open threads due to abnormal reaction, improper post-operative care, improper operation by doctors, etc. The signs are that the upper eyelid gradually loosens and sags, and the effect of blepharoplasty is not obvious, and even asymmetry of the two eyes and double eyelid is too wide, etc. If a candidate has the above situation, he/she may have the same effect. If the above situation occurs, it is necessary to pay attention to it and go to the hospital in time to check whether it is the case of open line at the buried line, and take out the buried line in time and carry out the incision double eyelid repair surgery.