A packet on the back of the neck with no painful symptoms is commonly a subcutaneous lipoma, which is a common benign disease, especially in obese bodies, and many patients even have a combination of symmetrical fat increase in the neck. If it affects the daily activities or rest, surgery can be chosen. Depending on the size of the lesion, local anesthesia or intravenous anesthesia can be chosen to remove the lesion and peel it off completely to avoid residue. If necessary, drainage strips can be placed in the subcutaneous tumor cavity to reduce the chance of postoperative infection and subcutaneous fat liquefaction.