It usually takes about 7 to 14 days for the scabs to fall off after the stitches are removed from the flap surgery. Flap surgery refers to flap transplantation surgery, is a surgical way to cut the skin and subcutaneous tissue, including deep muscle, and then cover the wound of a kind of surgical way, after surgery, the scabs are generally slower, because the surgery belongs to the relatively traumatic surgery, the wound healing usually takes about 7 days, and then the scabs are gradually falling off, it takes about 7 to 14 days. The scabs should fall off on their own after flap surgery, and should not be torn off by hand, otherwise it will easily lead to local infection, and will easily leave obvious scars. You should do a good job of sterilizing the scabs and taking protective measures. Flap surgery after the removal of stitches also need to actively cooperate with the doctor for care, if there is an infection, you should consult a doctor as soon as possible.