Shortness of breath can be caused by physiological reasons, respiratory diseases, endocrine diseases, cardiovascular diseases, neurological diseases and so on. 1. Physiological causes: shortness of breath and rapid respiratory rate can be caused by exercise or psychological tension, excessive anxiety, panic, drinking strong tea, alcohol, coffee, and so on. 2. Respiratory diseases: lung infections, pulmonary embolism, chronic obstructive pulmonary disease, asthma, etc., acute stage patients can appear shortness of breath, pay attention to check the lung function. 3. Endocrine diseases: endocrine system diseases such as menstrual disorders, menopausal syndrome, hyperthyroidism, hypothyroidism, etc. can cause palpitations, shortness of breath, tachycardia or bradycardia, arrhythmia and so on. 4. Cardiovascular and cerebrovascular diseases: cardiac infarction, cerebral infarction, coronary artery disease, insufficient blood supply to the myocardium, etc., patients may have shortness of breath. 5. Neurological diseases: cardiac neurological dysfunction, pulmonary neurological dysfunction, etc. may cause shortness of breath, panic, palpitations and other symptoms. If the above symptoms occur, you need to consult a regular hospital in time, and cooperate with the doctor to improve the examination and standardized treatment.