Bad stomach can cause insomnia, many people have bad stomach because of insufficient gastric power, these people have difficulty digesting and emptying the food after eating, the food in the stomach is not emptied in time will cause irritation to the stomach wall, causing stomach distention, acid reflux, belching and other symptoms, because there are symptoms of stomach discomfort, so it will be very difficult to sleep. Some people have a bad stomach because of duodenal ulcer disease, which is caused by hunger pain and pain in the middle of the night, and patients will wake up in the middle of the night because of the stimulation caused by stomach acid on the surface of the duodenal ulcer, which also affects the quality of sleep. When there is excessive secretion of gastric acid, accompanied by relaxation of the cardia sphincter, it is easier to have acid reflux into the esophagus during sleep, which will not only cause insomnia but also symptoms such as burning and pain in the chest.