The causes of pediatric gastritis are as follows: 1, food, drug factors: long-term use of antipyretic and analgesic drugs, such as Tylenol, Merlin, ibuprofen, etc., as well as the consumption of alcohol containing, coffee, easy to cause pediatric gastritis; 2, stress factors: children suffering from serious infections, shock and other diseases, induced gastric mucosal changes, can cause gastritis; 3, corrosive chemicals: strong acids and strong bases, can cause gastric mucosal damage; 4, infection Factors: consumption of unclean food, causing abdominal pain, vomiting, fever, etc.; 5. Allergic factors: such as milk, shrimp and crab, which can easily cause allergies, leading to abdominal pain, vomiting, bloody stools, etc. The incidence is increasing year by year and should be taken seriously.