Functional chest tightness and shortness of breath refer to the symptoms of chest tightness and shortness of breath without organic lesions. If the functional chest tightness and shortness of breath are caused by mental and environmental factors, generally no treatment is needed; if the functional chest tightness and shortness of breath are caused by autonomic nerve dysfunction, they can receive drug treatment.1. Mental and environmental factors: For healthy people, functional chest tightness and shortness of breath may be triggered if they are in a confined, airless, poorly ventilated and thinly oxygenated environment, or by excessive mental tension, anxiety and fear, but The body has not undergone any organic pathological changes. At this time generally do not need treatment, timely out of the confined environment, or relaxation can be alleviated, you can also do things of interest to divert attention; 2, autonomic dysfunction: autonomic dysfunction can affect the neuromodulation effect of multiple organs of the body, when the neuromodulation balance of the heart is broken, will trigger functional chest tightness, shortness of breath. It is recommended to take oral glutamate tablets, vitamin B12 tablets, vitamin B1 tablets, methylcobalamin tablets and other nerve-nourishing drugs as prescribed by the doctor, which is beneficial to the recovery of autonomic function.