Usually, stage I and stage II are the early stages of breast cancer, and it is recommended that those who have been diagnosed with the disease actively cooperate with doctors for treatment. According to the clinical staging of breast cancer, it is categorized into stage Ⅰ, stage Ⅱ, stage Ⅲ and stage Ⅳ. Among them, stage Ⅰ and Ⅱ are the early stages of the disease, and most patients may have no obvious symptoms. On the other hand, Stage III and Stage IV are in the middle and late stages of breast cancer, in which patients may have symptoms such as breast lumps and breast skin abnormalities, and the cancer cells may metastasize to distant places, which may even threaten their lives. If it is clear that the breast cancer is in the early stage, patients should actively cooperate with doctors to have breast preservation surgery or total mastectomy, etc. After surgery, patients can also take measures according to their conditions. After surgery, patients can also adopt chemotherapy and radiation therapy according to their conditions in order to control the progression of the disease. Usually, the prognosis of early-stage breast cancer patients is relatively good if they actively cooperate with doctors. If no attention is paid or treatment is given, the condition will be aggravated and treatment will be more difficult. It is recommended that patients diagnosed with breast cancer should adjust their mindset, cooperate with doctors for treatment, go to the doctor for regular checkups, and take better care of the skin of the breast area in daily life.