Coughing alone does not usually cause a rapid heartbeat, but if it is combined with a respiratory infection, myocarditis or other diseases, a rapid heartbeat may occur and require examination and treatment in a hospital. Simple coughing does not usually cause rapid heartbeat, violent coughing may cause rapid heartbeat, this is due to the diaphragm stimulated when coughing hard, resulting in sympathetic nerve excitation, thus accelerating the heart rate. If combined with respiratory infections, common infections, in addition to the general symptoms of coughing, coughing up sputum, sore throat, nasal congestion, runny nose, etc., severe cough and fever can cause the heart rate to accelerate, especially after the body temperature exceeds 38 ℃, the heart rate will accelerate significantly; if the infection is particularly serious, the late cause of the state of shock, the heart rate may drop. If combined with myocarditis, due to the myocardial cells will appear obvious blood supply, oxygen supply is insufficient, or even apoptosis, at this time there will be compensatory accelerated heart rate, need to be examined and treated under the guidance of a doctor, mainly symptomatic supportive treatment. If abnormal rapid heartbeat occurs, it is recommended to go to the hospital for treatment immediately.