It is entirely possible to cure breast cancer in its early stages, but it must be detected and treated early. Generally speaking, there may be no obvious symptoms in the early stage of breast cancer, and it only manifests as painless breast lumps, which must be taken seriously once discovered. Generally, it is necessary to do ultrasound for preliminary diagnosis, if the ultrasound grade is high, it is considered that there is the possibility of cancer, then as soon as possible for surgical biopsy pathology to confirm the diagnosis. After the diagnosis of breast cancer, radical mastectomy with axillary lymph node dissection is usually needed, but now there are breast-conserving surgical treatments. If the patient is relatively young and has the desire to preserve breasts, breast-conserving surgery can be considered for the sake of the appearance of the breast after surgery. After surgery, adjuvant radiotherapy and chemotherapy can be used. If the estrogen and progesterone receptors are positive, endocrine therapy can be used, and if there is amplification of the HER2 gene, the targeted drug Herceptin can be used, which may be better for prolonging the survival and controlling the progression of the disease.