Patients lying down with chest pain, the common causes are mainly the following situations: First, lung diseases, such as acute bronchitis, lung infection, will cause pulmonary capillary congestion, edema, patients can appear dyspnea, chest pain when lying down. At this time, the patient needs to improve the CT examination of the lungs, to clarify the specifics of the lung infection, choose the appropriate antibiotic intravenous anti-infection treatment, if necessary, feasible fibrinoscopy treatment, suction to remove the sputum in the bronchial stagnation, which can promote faster control of the lung infection. Secondly, if the patient is accompanied by reflux esophagitis and peptic ulcer, a large amount of gastric acid reflux to the lower end of the esophagus after lying down can also occur, causing pain in the chest. It is recommended that patients take oral omeprazole, rabeprazole and other acid suppressants to reduce the secretion of gastric acid, at least half an hour of activity after eating and then lying down, to avoid gastric reflux and recurrent symptoms of chest pain.