Breast cancer metastasis to the thoracic and lumbar vertebrae is more serious, so when this phenomenon occurs during the examination, it is necessary to cooperate with the doctor to carry out targeted treatment. If breast cancer has metastasized, it indicates that the cancer cells have developed to an advanced stage, and the thoracic and lumbar vertebrae belong to the load-bearing bones of the human body, and the occurrence of cancer may lead to the compression of nerves or the occurrence of bone fracture, which will have a greater impact on the patient’s physical condition. If the breast cancer has just metastasized to the thoracic and lumbar vertebrae, if surgical treatment is available, surgery should be performed as soon as possible to remove the diseased tissues, so as to play a certain inhibitory effect on the proliferation of the cancer cells, and at the same time, local radiotherapy under the guidance of the doctor can also slow down the effect of nerve compression, and if surgical control is not possible, it is necessary to cooperate with the doctor in the administration of chemotherapy, radiotherapy, and targeted treatment. If surgery is not possible, it is also necessary to cooperate with doctors for chemotherapy, radiotherapy and targeted therapy. Therefore, breast cancer patients should do early detection and early treatment.