Some breast cancer lumps are mobile and some are fixed lumps. If the lump is mobile, it means that it is growing slowly and not adhering to the surrounding tissues, and such lumps are easy to remove surgically. Some grow faster and the surrounding breast and fascia tissues have stuck together, fusion and adhesions have occurred, and some lumps are fixed. Therefore, the mobility of different tumors is different, and the severity of tumor development can be judged according to its mobility, the more fixed the tumor is, the more serious the development is. So for fixed tumors, treatment should be done before surgery to make the tumor shrink, disappear or become better in mobility, so as to facilitate surgical excision and avoid recurrence and metastasis after mastectomy; at the same time, it can also achieve breast preservation, and even for some lumps that grow under the armpit, it can also achieve armpit preservation to avoid postoperative damage to the lymph nodes in the armpit and cause postoperative upper limb edema. So according to different situations and different stages, to do different treatment.