Sleeping breathlessness may be due to mental factors, cardiogenic diseases, respiratory diseases and other reasons. 1. Mental factors: daytime work is tense, stress, often anxiety, depression, sleep in a tense state of mind, resulting in sleep gasping for air, through the regulation of emotions, the release of pressure can be relieved most of the time. 2. Cardiogenic diseases: such as coronary atherosclerotic heart disease, acute myocarditis, infective endocarditis and other cardiac insufficiency, can appear when sleeping breathless. 3. Respiratory diseases: for example, bronchial dilatation, acute attack of chronic asthma, pneumonia, chronic obstructive pulmonary disease, sleep apnea syndrome, etc., can appear in the sleep of the symptoms of sudden gasping for air. Sleeping breathlessness, there may be other reasons, it is recommended that timely medical treatment to identify the cause of early treatment, so as not to miss the condition.