There are many factors that cause gastritis. Acute gastritis is mostly caused by unclean diet, or eating too much spicy food and drinking too much. Chronic gastritis is mostly caused by helicobacter pylori infection. Secondly, due to irregular life, frequent staying up late, high work pressure, mental stress, depression and other factors, it is also easy to cause chronic gastritis. Some people often eat some spicy, irritating and cold and rough food in their diet, which causes irritation to gastrointestinal mucosa, injury and chronic gastritis.