Flap necrosis after sweat gland removal can be treated surgically by removing the necrotic tissue and then transplanting the flap. Flap necrosis caused after sweat gland removal, patients should promptly remove the necrotic tissue, if the area of skin lesion after removal of necrotic tissue is small, you can try to push the surrounding skin into the flap to cover the wound, if the area of skin lesion after removal of necrotic tissue is large, you can consider skin flap transplantation to restore the blood supply of necrotic tissue and improve the local nutritional status. Skin flap necrosis after sweat gland excision should clarify the degree of injury in time, and the doctor should adequately assess the patient and choose the appropriate treatment. Patients should also pay attention to wound care after surgery to avoid infection, and patients should also avoid friction on the surgical site when wearing clothes in daily life.