Breast cancer metastases may shrink or be eliminated after treatment, but the probability of complete elimination is relatively low. Breast cancer is a common malignant tumor, and the cancer cells can metastasize to many parts of the body, and when the cancer cells metastasize, the cancer is usually in advanced stage. After metastasis of breast cancer occurs, the main treatments include chemotherapy, targeted therapy, endocrine therapy, etc. After receiving the corresponding treatments, some patients will have their metastatic foci shrunk or even eliminated. However, the prognosis is still relatively poor after cancer metastasis according to different personal situations. If metastasis of breast cancer is found, patients are recommended to go to regular hospitals to further clarify their conditions and receive standardized treatment as early as possible to prolong the survival period.