The face and neck are the most exposed parts of the body, and scarring of the face and neck caused by heat or trauma can have a serious impact on a person’s appearance, so repair of scarring of the face and neck accounts for more than 80% of human scar repair. Before the 1990s, facial and neck scar repair could only be done by skin grafting, which was prone to contracture and gray color, and the final result was very poor. The soft tissue skin expansion technique provides the best method for perfect repair of facial and cervical scars. Through the preliminary surgery, an expandable water bladder is embedded in the normal skin of the scar area, and water is injected into the bladder intermittently, with the expansion of the bladder, the local skin is expanded, and then the bladder is removed and the expanded excess skin is transferred to repair the facial and cervical scars, finally achieving the effect of non-invasive repair of facial and cervical scars.