Many patients do not know what “psychosomatic diseases” are, and they do not know whether they can go to the “psychosomatic medicine department” for consultation. What is psychosomatic illness? At present, there are two kinds of psychosomatic diseases: narrow and broad. In the narrow sense, psychosomatic diseases refer to somatic organic diseases in which psychosocial factors play an important role in the onset and development, such as primary hypertension and ulcer disease. As for somatic functional disorders in which psychosocial factors play an important role in the pathogenesis and development, they are called psychosomatic disorders, such as neurotic vomiting and migraine. In the broad sense, psychosomatic disorders refer to somatic organic diseases and somatic functional disorders in which psychosocial factors play an important role in the pathogenesis and development. Obviously, the broad sense of psychosomatic diseases includes the narrow sense of psychosomatic diseases and narrow sense of psychosomatic disorders. Classification of psychosomatic diseases: 1, circulatory system: primary hypertension, coronary arteriosclerotic heart disease, neuropathic angina pectoris, paroxysmal supraventricular tachycardia, functional premature beats, primary glaucoma. 2. Respiratory system: bronchial asthma, neurological dyspnea, neurological cough. 3.Digestive system: peptic ulcer, chronic gastritis, gastric prolapse, allergic colitis, neurogenic vomiting, neurogenic pressure eating. 4.Nervous system: migraine, muscle tension headache, plant nerve dysfunction. 5.Endocrine system: diabetes mellitus, hyperthyroidism, obesity. 6.Urinary system: nocturia, neurogenic urinary frequency. 7, skin: neurodermatitis, scratching, allergic dermatitis, urticaria, eczema, hyperhidrosis. 8.Ear, nose and throat: Meniere’s ear disease, allergic rhinitis, tinnitus, motion sickness. 9, reproductive system: menstrual irregularities, anomenorrhea, dysmenorrhea, menopausal syndrome, impotence, premature ejaculation, pubic paralysis, infertility. 10.Skeletal muscle system: rheumatoid arthritis, generalized muscle pain, spinal allergy, writing spasm, spastic slant neck, cervical wrist syndrome, facial spasm. 11.Malignant tumor: In the classification of some psychosomatic diseases, malignant tumor is not included, but according to many clinical experiences, the occurrence of malignant tumor is closely related to psychosocial factors. Some people have investigated 245 cases of cancer inpatients, 66.9% of the cases had negative emotions before the disease, while the control group only had 15.5%. A study of 30 breast cancer cases by Gerry et al. pointed out that there was a significant association between the development of cancer and stimulating life events. In his famous book “Psychosomatic Medicine”, Elleheid included cancer as a psychosomatic disease. The occurrence of malignant tumors is also related to social factors, and smoking and environmental pollution can cause cancer.