The vast majority of patients with breast cancer that has metastasized to the lungs are incurable. Breast cancer is a common malignant tumor that can be caused by factors such as family genetics and estrogen levels. When the disease develops to the advanced stage, it will usually be complicated by distant metastasis, such as lung metastasis. At this time, the condition is usually complicated, and the patient’s physical condition is poor, with low tolerance to treatment. After active treatment, the survival time of patients can be prolonged, but it is difficult to achieve the effect of cure. In this period, radiotherapy, targeted therapy and other non-surgical therapies are mostly used, aiming at prolonging the survival period and improving the quality of life of patients. Secondly, it is necessary to eat more protein-rich food, keep a happy mood, and do sports appropriately to enhance one’s resistance. Breast cancer has lung metastasis patients should go to the hospital in time for examination and treatment under the guidance of doctors.