Gastritis is a common inflammatory disease, and patients with gastritis need long-term continuous treatment to be cured. It generally takes more than a month of continuous treatment, along with active diet therapy, to completely cure gastritis. The first is the antimicrobial drugs, commonly used are levofloxacin and amoxicillin; the second is the drugs to stop acidity, commonly used are omeprazole and ranitidine; the third is the gastric mucosa protector, the representative drugs are salicylic acid and bismuth. The treatment of gastritis requires the combined use of these three types of drugs, along with regular dietary treatment, eating some easily digestible food with the treatment.