Mash hurts the stomach. Mash generally refers to rice wine. One of the main ingredients of rice wine is alcohol, which hurts the stomach. Alcohol is very irritating to all kinds of mucous membranes and skin in the body. Drinking alcohol can cause direct damage to the gastric mucosa. At the same time, alcohol stimulates the gastric mucosa to secrete a large amount of gastric acid, and many patients with gastric diseases need to inhibit the secretion of gastric acid themselves, but alcohol is counterproductive. Under the direct and indirect stimulation of alcohol, the gastric mucosa becomes congested, edematous and even eroded. Normal people usually have stomach discomfort after drinking alcohol, such as nausea, vomiting, etc. If people with underlying stomach diseases, such reactions will be greater, and even induce gastric hemorrhage, gastric perforation. Alcohol is not only harmful to the stomach in the short term, but it is also a carcinogen that increases the likelihood of esophageal, gastric, and liver cancers. To summarize, mash hurts the stomach, and people with stomach problems are advised not to drink any alcohol products.