Fatty cyst excision surgery mainly includes three steps, incision, cyst removal and suture. 1. Incision: aseptic sterilization should be carried out before incision, the incision should be made on the surface of the cyst, and a wedge-shaped incision should be made along the dermatoglyphic line, paying attention to the opening should not be too big so as not to affect the suture, and paying attention to the operation of hemostasis in the process of incision, so as not to affect the surgical field. 2. Cyst removal: the cyst will be exposed after the incision is made, the surgeon will use hemostatic forceps to gently clamp the mucosal tissues adhering to the surface of the cyst, and then bluntly separate the cyst from the surrounding tissues, and be careful not to puncture the cyst when separating it in order to avoid infection. 3. Suture: after the removal of the cyst, the wound should be sutured. Before suturing, the surgical area should be firstly flushed with saline, and then sutured with suitable thread. Before and after the operation, we should pay attention to the sterility of the operation site, and if there is any discomfort in the operation site, we should consult a doctor in time.