The specific manifestations of emotional cancer include: introverted personality, apparently submissive, no complaints, but inwardly resentful, painful struggle, with a history of mental trauma; depressed, good at sulking, but do not like to vent; a very small thing in life can make them anxious, always in a state of tension; on the surface to sacrifice themselves for the sake of others, but inwardly but extremely reluctant; when encountering difficulties, at first do not try to overcome, but in the end to do a beastly fight; fear of competition, escape from reality, trying to achieve a false balance by appeasement, etc. When you encounter difficulties, you do not try to overcome them at first, but drag them to the end to do the fight of the beast; you are afraid of competition, escape from reality, and try to achieve a false psychological balance by means of appeasement, etc. The human nervous system, endocrine system and immune system share a set of signals. Once disturbed by “cancer personality”, it will lead to disorder of neuroendocrine activities and dysfunction of organs, and reduce the immune ability of the body and weaken the immune surveillance function, which will affect the surveillance role of the immune system to identify and destroy cancer cells and lead to transformation and mutation of cancer cells. In tumor patients, doctors can mostly find such pathogenic factors called “tumor personality”, such as: withdrawn, depressed, suspicious, sulking, silent, narrow-minded, jealous, irritable, poor patience and other bad emotions, which are the most effective medium for tumor cell production and development. Diagnosis is judged according to whether the patient has negative emotions and other triggering causes. Emotional cancer diagnosis is based on examination items such as effusion carcinoembryonic antigen, cytology of plasma cavity effusion, erythrocyte enolase, leucine aminopeptidase, and serum salivary acid measurement. Human psychological activities and physiological functions are mutually influenced. Psychosocial factors are closely related to the occurrence and development of cancer and play a very important role in the process of cancer occurrence and development. Normally, the immune surveillance function of human body can recognize cancer cells and kill or suppress them in time. Therefore, although cancer-causing factors can induce cell cancer, human body does not necessarily suffer from cancer. If the body is affected by various adverse social and psychological factors for a long time, the neurological, endocrine and immune functions will become dysfunctional, which will lead to cancer. Therefore, while taking care of oneself psychologically, one should pay attention to active physical exercise, not to be partial to food, to maintain a normal weight, to seek medical treatment early when sick, and to stay away from bad habits such as smoking and alcohol, so that the immune system of the body can play a better role as a sentinel and effectively suppress and reduce the occurrence of cancer.