To determine whether the non-removable thread has been completely absorbed, there must be enough time, exposed thread and no hard knots, oozing, etc., as follows: 1, enough time: it must be enough time after the wound is sutured, generally at least 2-3 weeks, the absorbable thread is able to integrate with the surrounding tissue or absorption; 2, exposed thread: if you see the thread exposed on the surface of the skin, that is, the thread has been Self-shedding, this situation represents the subcutaneous absorbable thread has begun to absorb and break; 3, no hard knots, oozing, etc.: touch the wound to see if there are obvious hard knots or oozing, inflammation, etc., if there are no such phenomena, combined with the above two situations, you can basically judge the absorbable thread has been completely absorbed.