I. Overview 1. Those with inflammation in the weave or inflammation near the surgical incision. 2, Those who have infections in other parts, or those who have lesions in important organs such as heart, liver, kidney and blood and immune system. 3.Inadequate psychological preparation for surgery. 4.Periodic and lactating women. 5.Pre-operative instructions The diet after the surgery is the same as the usual diet, but the upper limb activity on the side of the surgery should not be too strenuous, so as not to pull the surgical site to cause pain or affect the healing of the incision. If you have a sensitive body, do not eat stimulating food (such as spicy food and alcohol) as much as possible. II. Risks and complications 1. Infection: There is a possibility of infection during the operation, and once it occurs, medical attention should be sought promptly. 2.The occurrence of hematoma is related to the injury of blood vessels during the operation, and it can subside within a short time after the operation. 3.Cracking: There are more reasons leading to cracking of the incision, such as the use of lower crease incision, infection, etc. Once it occurs, it should be promptly rescued. 4.Tissue not completely removed: The source of the gland is not found when the gland is removed during surgery, resulting in the gland not being removed cleanly, once this happens, it needs to be treated by surgery again.