Weeping and laughing disorder is a condition in which the patient himself cannot control his emotions, sometimes laughing and sometimes howling, and is unpredictable. This disease may be due to problems in the brain and can be treated in the neurology and psychiatry departments of hospitals. The cause of crying and laughing disorder is mainly a disorder of brain function, abnormal mental activity, and may also be due to the effect of certain stimulants. Madness is an important cause of crying and laughing disorder. It is a common and frequent psychosis characterized by mental hyperactivity, mania, cursing and destroying things, moving and getting angry, and even killing people with knives. Most young adults suffer from this disease. The causes of madness caused by the crying and laughing disorder: 1, the emotions and internal injuries of the emotions, especially the rage, triggering the liver and gallbladder wood fire rise, the heart offends the brain, the gods lose their master. Or sudden panic, touching the heart fire, disturbing the clear spirit, the gods can not help themselves, the spirit of rebellion, restlessness and unrest and the development of the disease. Or liver fire, burning blood for blood stasis, blood stasis paralysis of the main (heart), the House of the gods (brain), then the gods of the machine loss, and the development of the disease. 2, the diet is not moderate over-eating fatty and sweet, sorghum thick taste of the crystal, brewed into phlegm candle, and because of the heart fire, phlegm with the fire, obscuring the heart orifices, the gods have no master; or greedy drink, wet in the vegetation, depression and heat, filling the stomach and intestines, the internal heat upward, disturbing the genitals and the onset of the disease. 3, congenital genetic mother’s womb frightened and caused by deficiency, then the Shen Qi disorder; or deficient endowment and family inheritance, after birth suddenly stimulated by the Yin and Yang disorder, Shen Qi rebellion and cause the disease. In conclusion, internal injuries from the seven emotions, dietary disorders and congenital heredity are the main causative factors of the disease, while phlegm, fire, stagnant blood, occlusion of the heart and brain, imbalance of yin and yang, and loss of control of form and spirit are the pathogenic mechanisms. The disease is located in the heart and brain, and is closely related to the liver, gallbladder and spleen. At the beginning of the disease, most of the evidence is actual, such as phlegm and fire disturbing the heart; then, fire and heat burning blood for stasis, refining liquid for phlegm, and mostly see phlegm and blood stasis, stasis and blood blocking the orifice; in the long run, most of the deficiencies and symptoms are actual, such as fire and yin consuming qi, and the heart and kidneys do not intersect.