The shortness of breath and chest tightness may be related to physiological reasons such as emotional excitement or pathological reasons such as heart disease and lung disease. 1. Physiological reasons: people in emotional excitement, can lead to the body sympathetic nerve over-excitement, resulting in increased heart rate, myocardial oxygen consumption increases, can appear chest tightness and shortness of breath phenomenon. 2. Pathological reasons: such as coronary heart attack can cause myocardial ischemia, hypoxia, resulting in symptoms of chest tightness and shortness of breath; if you suffer from chronic obstructive pulmonary disease, due to pulmonary insufficiency, can cause chest tightness and shortness of breath symptoms. It is recommended to go to the regular hospital in time to consult a person with shortness of breath, clear reasons, if you need treatment, standardized treatment under the guidance of the doctor, so as not to delay the condition.