There are mainly three causes for the onset of acute gastritis: First, excessive fatigue, due to lack of rest and physical overexertion, can lead to a decline in immune function and the protective function of the gastric mucosal barrier, resulting in the occurrence of gastritis. Second is irregular eating habits, such as frequent binge eating, consuming spicy foods, and a preference for alcohol, strong tea, or coffee, all of which can significantly irritate and damage the gastric mucosa. Third is emotional fluctuations, such as being irritable, depressed, or anxious, which can directly affect the gastrointestinal tract through neurohumoral regulation and cause acute gastritis.