Generally speaking, there are two kinds of lines for line carving, one is absorbable protein line and the other is nonabsorbable line. In fact, the curative effect of the two drugs is similar, and the postoperative maintenance time is similar. After the absorbable protein thread is absorbed and degraded by the human body after operation, it does not need any other treatment, while the non-absorbable protein thread needs to be taken out of the hospital for about one year.