With the increasing incidence of breast cancer, the number of breast cancer patients is increasing. Due to the special nature of breast cancer, patients not only have to suffer from the cancer itself, but also face the huge psychological impact caused by the loss of body image due to breast loss. According to the data, the incidence of psychological disorders in breast cancer patients is much higher than that in other malignant tumors. According to a foreign survey on early stage breast cancer patients, 45% of them have mental disorders, 42% of which are depression or anxiety disorders. 1/5 of them have two or more mental disorders, 1/3 of them feel that they are less attractive, many of them have lost their sexual desire, and the hair loss caused by chemotherapy makes them feel great pain. Many domestic data show that breast cancer patients still have up to 45% of anxiety and 60% of depression two years after surgery. According to the author’s survey, most patients showed high anxiety, anxiety, fear or depression, pessimism, loss of reason and other psychological and behavioral changes during the treatment period, as well as fear of chemotherapy side effects. Fear of tumor recurrence and metastasis, impaired self-esteem due to breast loss, low self-esteem, feelings of discrimination and reduced self-worth are commonly expressed by patients in the rehabilitation period. For many patients, the cure of physical disease does not enable them to reach a healthy state of physical and mental harmony and perfection. Psychosocial factors are closely related to the development of tumors. The occurrence of many cancers is related to the stimulation of major life events and long-term negative emotions before the disease, and the cancer incidence rate of people with C-type behavioral characteristics such as excessive patience and repression is more than three times higher than others; while good emotional support, behavioral interventions and other psychological treatments can double the survival period of cancer patients, and relaxation training, social support, and self-explanation can increase cellular immune function, thus prolonging the survival period of patients. Good psychological support is necessary for the treatment and recovery of breast cancer patients. So, how to provide positive psychological support to breast cancer patients? Medical workers have the most contact with patients and should be the backbone of psychological support for patients. Adequate communication between doctors and patients, the provision of correct information about breast cancer treatment and patients’ understanding of all aspects of the disease treatment process will help to eliminate patients’ incorrect perceptions and unnecessary worries about breast cancer. The use of some psychotherapeutic techniques in clinical practice can be very helpful in solving patients’ psychological problems. The social support system plays an important role in the treatment and recovery process of breast cancer patients. The demonstration role of old patients, the comfort and understanding of relatives and friends and the uncompromising care in life will greatly enhance the confidence of patients to overcome cancer. For the patients themselves, they should learn more about the treatment of breast cancer, eliminate the misconceptions about the disease, build up the confidence to overcome the disease and actively cooperate with the treatment with a scientific attitude. Communicate more with medical staff and friends and relatives to release their fears about breast cancer and to get the understanding and help from friends and relatives. Try to think about some positive issues and participate in appropriate physical exercise and useful social activities to resume normal working life as soon as possible. You can also join breast cancer patient support groups or patient associations to communicate with more patients, which can better eliminate loneliness and get emotional support from patients and recovery experience from other patients. In addition, activities such as contemplation, yoga and Tai Chi are also beneficial to patients’ mental and physical recovery. Although breast cancer patients face many psychological problems that affect their recovery, through the attention of health care professionals and the whole society to these problems, and the full help of social support system, the psychological pain of breast cancer patients will be greatly reduced, so that they can truly achieve a harmonious and complete state of physical and mental health, and rebuild a beautiful life.