Cardiac dysfunction is a group of neuroses, patients commonly have chest tightness, palpitations, breath holding, shortness of breath, insomnia, irritability, nervousness and so on. However, through various examinations in the hospital, there is no organic lesion, so it belongs to a group of neuroses with no organic lesion and is mainly based on psychological factors. In terms of treatment, it is divided into drug treatment and psychological treatment. Psychological treatment mainly encourages patients to do physical exercise as much as possible, take part in outdoor group activities, adjust their mentality, live and work in a regular manner, and also helps them to eliminate their worries. There is also drug treatment, drug treatment is mainly glutamine and vitamin B12, methylcobalamin and other nutritive nerve drugs. Also need to eliminate the triggers to correct insomnia, once suffering from this disease, tell the patient not to be too nervous, can be cured.