Core tip: long term use of the diet has strong stimulation of the gastric mucosa and drugs, such as tea, wine, spicy food or salicylates, or not fully chewing, rough food repeated injury of gastric mucosa, or excessive smoking, smoking directly on the gastric mucosa caused by oxalic acid. Some drugs such as salicylates, digitalis, indomethacin, phenylbutazone, Xin Kefen can cause chronic gastric mucosal damage. With the improvement of living conditions, now more and more people suffering from gastritis, to many people's lives are affected, in the attack, will feel very uncomfortable, in life, there are a lot of people do not pay attention to small details, it is easy to suffer from gastritis, then what is the reason lead to the occurrence of gastritis? We come together to find out. 1, Helicobacter pylori infection: we have confirmed by clinical studies Hp in chronic active gastritis detection rate of 98% to 100%, indicating that chronic gastritis, especially chronic active gastri...