The dosage of Amoxicillin for the treatment of Helicobacter pylori is usually 1g twice a day, and the specific dosage should be used under the guidance of a doctor. Helicobacter pylori is one of the common causes of gastritis, gastric ulcer, gastric cancer, clinical treatment of Helicobacter pylori is usually used quadruple therapy, generally amoxicillin, clarithromycin, bismuth potassium citrate, omeprazole, amoxicillin twice a day, 1g each time; clarithromycin twice a day, 0.25g each time; bismuth potassium citrate four times a day, 110mg each time; omeprazole twice a day, 20mg each time. The general treatment cycle is 14 days, the specific dosage should be used under the guidance of a physician. The above drugs should be used under the guidance of a medical professional. After one cycle of quadruple therapy for H. pylori, it is recommended to stop taking the medication for 2 weeks to 1 month for a review, avoid going out for dinner during the medication period, and recommend sharing meals with family members.