Sudden and violent inhalation while sleeping may be physiological factors, such as excessive fatigue, or may be caused by pathological diseases, such as heart disease, lung disease, etc.. 1. Excessive fatigue: when the body is overworked, sleep will be more heavy, the body has to self-regulate, and some people will do a sudden sharp inhalation to relieve fatigue. 2. Heart disease: For example, patients with heart failure may have sudden dyspnea during night sleep, be suffocated to wake up and sit up, and need to take a deep breath to relieve the symptoms. 3. Lung disease: common bronchial asthma, obstructive sleep apnea hypopnea syndrome, asthma patients often manifested as nocturnal episodes of dyspnea; obstructive sleep apnea hypopnea syndrome, there can be apnea, snoring, nocturnal breathlessness, etc., sleep will suddenly appear violent inhalation of action. There may be other reasons for the sudden and violent inhalation while sleeping, so you can consult the doctor in time and follow the doctor’s instructions for reasonable treatment.