How long does it take for a surgical thread to fall off cannot be generalized and is related to the type of thread. There are two types of surgical threads: one is silk thread, which cannot be absorbed by the body and needs to be removed on time; the other is absorbable thread, whose shedding time varies according to its composition, thickness, suture site and patient’s prognosis, and can generally be shed on its own within 1-2 weeks. In addition, it is also related to the nutritional status of the individual. In elderly patients, the shedding time of absorbable threads can be extended by 1-2 days, while in young or pediatric patients, the shedding time is relatively short and can be done in about 1 week. In addition, depending on the location of the wound, the cleanliness of the wound, and the healing of the wound, the shedding time of the absorbable thread varies, for example, the head and neck wound can be shed in about 4-5 days, and the chest and abdomen in about 7 days. After surgery, it is necessary to frequently observe the healing status of the wound, change the medication regularly, and eat a reasonable diet.