Helicobacter pylori is a kind of bacteria parasitized in the stomach, which can damage the gastric mucosa and stimulate the secretion of gastric acid through the production of toxins, causing gastritis, gastric erosion, gastric ulcers, duodenal ulcers, and even gastric cancer. Generally speaking, it is necessary to kill this bacterium when it is found that gastric ulcers or duodenal ulcers are accompanied by this bacterial infection. At present, the clinic commonly used quadruple therapy to eradicate the bacteria, commonly used 2 kinds of antibiotics, 1 kind of bismuth, 1 kind of proton pump inhibitor. 1.What are the bactericidal antibiotic drugs? Commonly used bactericidal drugs are amoxicillin, clarithromycin, levofloxacin, metronidazole, furazolidone, tetracycline and so on. Cephalosporin and azithromycin are not drugs that kill H. pylori. Antibiotics are best used in combination with two uses, this bacterial vitality, a single drug is difficult to cure it. 2, bismuth agent commonly used colloidal bismuth pectin capsules, bismuth citrate potassium capsules, etc.; 3, proton pump inhibitors commonly used omeprazole, rabeprazole sodium, pantoprazole sodium, ace omeprazole magnesium enteric-coated tablets and so on. 4, the standard program is amoxicillin, clarithromycin, bismuth pectin, omeprazole, 4 drugs combined to eat for 2 weeks, the course of treatment is not the longer the better, the longer the side effects, the greater the side effects, there may be diarrhea intestinal flora disorders and other side effects. Gastritis with Helicobacter pylori infection, if there are no symptoms, you can first observe, do not cure Helicobacter pylori first. Of course, except for the patient’s strong request or the need for long-term use of antiplatelet drugs. This bacterium is mainly transmitted through the digestive tract, close contact, eating can be infected, it is recommended to clear before and family cutlery separate, pay attention to cutlery disinfection.