Always want to sigh may be related to physiological factors, psychological disorders, respiratory diseases, etc., while long out of breath may be related to mental overstress, cardiac insufficiency, respiratory diseases, etc.. Always want to sigh physiological factors are overworked or nervous, is the body’s normal physiological response; psychological disorders such as anxiety, depression, etc. because of low mood and sighing, but also may have weakness, agitation, sleep disorders, etc.; respiratory diseases such as bronchial, asthma, etc., inflammation stimulation of the respiratory tract, breathing difficulties, will often sigh, and coughing, wheezing and other symptoms. Long out of breath by the mental overstress, like long out of breath to relieve emotions; respiratory diseases such as chronic obstructive pulmonary disease, resulting in alveolar or trachea, bronchial elasticity decreases to affect the gas exchange, resulting in the emergence of long out of breath; cardiac insufficiency is mostly due to ischemia of the myocardium, insufficient supply of nutrients may also be manifested as long out of breath. The phenomenon of always wanting to sigh and long out of breath, if accompanied by other discomforts, it is recommended to go to the hospital in a timely manner, improve the examination, identify the cause of the disease, and standardized treatment under the guidance of the doctor.