Breast cancer metastasis to the clavicle and lungs is usually incurable, but patients can prolong the survival cycle and improve the quality of life through active treatment. Breast cancer is one of the common clinical oncological diseases and is highly prevalent in women. Early lesions can be limited, and metastasis can occur with disease progression, such as supraclavicular lymph node metastasis, liver and lung metastasis. Lung metastasis represents distant metastasis of breast cancer, suggesting that the disease is in advanced stage, which is usually incurable and the 5-year survival rate is relatively low. However, if patients at this stage can receive regular treatment, such as endocrine therapy, targeted therapy, chemotherapy, etc., it is possible to inhibit tumor growth to a certain extent, control the rate of disease progression, improve the quality of patients’ survival as much as possible, and prolong the survival time of patients. Once breast cancer patients are diagnosed, they should seek timely and regular medical treatment as early as possible, follow the doctor’s instructions for treatment, and undergo regular review; at the same time, they should maintain an optimistic and positive attitude towards life, which is conducive to the control of the disease.