Early stage of breast cancer bone metastasis to the lumbar region may present persistent lumbar pain, activity limitation, pathological fracture, paralysis and other symptoms. When breast cancer bone metastasis reaches the waist, it will cause persistent lumbar pain, accompanied by numbness and pain in the lower limbs, and activity limitation, which has no obvious relationship with body position activity. Secondly, the cancer cells damage the bone quality, and patients are prone to pathological fracture, resulting in paralysis. More serious patients may also suffer from diaphoresis, and may also suffer from decreased muscle tone, swollen lymph nodes, coma and other symptoms. Breast cancer bone metastasis to the waist, patients may also develop anemia and hypoproteinemia. If the condition is not controlled, lung metastasis, liver metastasis and multiple metastasis of the whole body in the abdominal cavity may easily occur, and patients may have symptoms such as respiratory difficulties and yellowing of skin and mucous membranes. It is recommended that patients go to the hospital in time to confirm the diagnosis and actively cooperate with the treatment under the guidance of the doctor.