There is no specific time for how long the left breast total excision can live, it needs to be analyzed according to the specific situation, the patient’s mentality and emotion after the operation, the degree of pathology and so on have an impact. Left mastectomy is a radical surgery for breast cancer. Although breast cancer is one of the most prevalent malignant tumors among women in the world, early breast cancer can be cured with the development of medical science nowadays. The survival period of left mastectomy should also be analyzed with the postoperative pathological condition, whether the breast cancer recurs and metastasizes after surgery, whether there is any cooperation with radiotherapy, chemotherapy and regular review after surgery, and whether there is any cooperation with taking medication to control the disease, etc, which can affect the survival period of the patients. If the patient’s condition is good after surgery, it is very common for the patient to survive for more than 10 years. Patients need to have a positive attitude to overcome the disease, relax to avoid anxiety, such as the emergence of low self-esteem, depression, fear and other negative emotions, will affect the recovery of the body, family and friends can be more communication with the patient to give support to eliminate the low mood.