Patients with a hard lump in the chest usually need to be referred to general surgery or breast surgery, which is a secondary discipline of general surgery. The presence of a lump in the chest usually requires further ultrasound examination and a comprehensive judgment. If it is simply a layer of body fat, it may be a lipoma or sebaceous cyst. Whether it is a lipoma or a sebaceous cyst, cure can usually be obtained by complete excision using local anesthesia. In addition, it is important to be alert to the presence of a mass on the breast, which mostly requires a comprehensive grading based on whether the mass has clear borders, good blood supply, whether it is accompanied by calcification after surgery, and whether the comprehensive ratio exceeds 1. If the grading is above grade IV, it means that there is a possibility of malignancy and further pathological biopsy is often needed to rule out breast cancer. If breast cancer is confirmed, radical or modified radical treatment of breast cancer is often required, along with postoperative comprehensive treatment to improve the cure rate.