A bad stomach can affect sleep. There is a saying in the Yellow Emperor’s Classic of Internal Medicine that if the stomach is not in harmony, the sleep is restless, which clearly points out that stomach disorders are closely related to sleep. Stomach disharmony mainly refers to stomach disorders caused by various pathologies, resulting in stomach pain, nausea, vomiting, acid reflux, heartburn, belching and other uncomfortable symptoms. Restlessness refers to distractedness, insomnia or sleepiness. The digestion of the human body depends mainly on the normal function of the spleen and stomach, which is normal when the spleen rises and the stomach falls. If the spleen and stomach function is not normal, it will only lead to liver qi stagnation, and liver qi stagnation will easily turn into fire, and liver fire disturbing the heart can lead to disturbed mind and affect the quality of sleep, so a bad stomach may affect sleep.