Specific manifestations of emotional cancer include: introverted character, superficially submissive and uncomplaining, but inwardly full of grievances and painful struggles, with a history of mental trauma; depressed mood, good at sulking, but do not like to vent it out; a very small thing in life can make them anxious and in a tense state; superficially sacrificing themselves for the sake of other people but inwardly extremely reluctant; when encountering difficulties, they do not try their best to overcome them at the beginning and then do a beastly fight in the end; fear of competition and avoiding reality in an attempt to achieve a false psychological balance by palliative methods, and so on. When encountering difficulties, the beginning does not try to overcome, delayed until the end to do the fight of the beast; fear of competition, escape from reality, trying to palliate the method to achieve a false psychological balance and so on. The human nervous system, endocrine system and immune system share a set of signals. Once interfered by “cancer character”, it will lead to disorders of neuroendocrine activities, dysfunctions of organ functions, lowering of body immunity and weakening of immune surveillance function, which in turn affects the surveillance role of immune system in recognizing and destroying cancer cells, and easily leads to transformation and mutation of cancer cells. Human psychological activities and physiological functions are mutually influential. Psychosocial factors are closely related to the occurrence and development of cancer and play an important role in the process of cancer occurrence and development. Normally, under normal circumstances, the immune surveillance function of the human body can recognize cancer cells in time and kill or inhibit them, therefore, although carcinogenic factors can induce cell cancer, the human body does not necessarily suffer from cancer, and cancer can be formed only when the immune function is impaired. Only when the immune function is impaired can cancer be formed. If the organism is affected by various adverse social and psychological factors for a long period of time, the nervous, endocrine and immune functions will be out of order, leading to the occurrence of cancer. Therefore, while taking care of one’s psychology, one should pay attention to actively exercising the body, not eating in a partial way, maintaining a normal body weight, seeking medical treatment as early as possible, and staying away from bad habits such as smoking and drinking, so as to make the body’s immune system play the role of a sentinel in a better way and effectively inhibit and reduce the occurrence of cancer. In diet, it is advisable to eat food rich in vitamin B1, B6 and B12; it is advisable to eat high protein, high fiber and high calorie diet; it is advisable to eat food with laxative effect in order to keep the stools unimpeded; and it is also advisable to supplement sufficient amount of water. The following foods are recommended to eat in moderation: 1, grapefruit A high amount of vitamin C can not only maintain the concentration of red blood cells, can increase the body’s resistance, but also vitamin C can be anti-stress, the prevention of depression is favorable. It is recommended to eat in moderation. 2, bananas Contain a substance called alkaloids, can uplift people’s spirits and improve confidence, and bananas are a source of tryptophan and vitamin B6, which can help the brain make serotonin. It can help the brain to make serotonin and reduce the possibility of depression. 3, spinach Lack of folic acid can lead to a decrease in serotonin in the brain, leading to depression, and spinach is the most famous folic acid-rich ingredients. Spinach is the most famous ingredient rich in folic acid. It is a recommended dish for the prevention of common depression.