In this study, effects of oral and written education, WeChat education plus oral and written education on Helicobacter pylori eradication will be compared in a randomized way.

There are two randomized parallel groups in this study, control group and Wechat group.All of the patients will be treated with Amoxicillin + Clarithromycin + Bismuth + Vonoprazan fumarate. In control group,the patients will be educated by oral and written way about the regimen. In Wechat group, the patients will be educated by Wechat oral and written way. Then, the eradication rates, compliance, adverse events, patients' satisfaction and experience will be evaluated.

Inclusion Criteria:

1. aged between 18 and 75 years old;
2. H. pylori infection confirmed by any two positive outcomes of rapid urease test (RUT), 13C-urea breath test (UBT) or histopathology.

Exclusion Criteria:

1. previous therapy for H. pylori;
2. with significant underlying disease (e.g. decompensated liver cirrhosis, renal failure or malignant tumors) that may interfere the study;
3. history of gastric surgery,
4. pregnancy or lactation;
5. the use of PPI or antibiotics during the 4 weeks prior to enrolment;
6. previous history of allergic reactions to any of the medications used in this protocol;
7. unable to use smartphone and wechat
8. unwilling or incapable to provide informed consents.

The interventions are blind to follow-up personnel who collect and analyze compliance and the incidence of adverse events. The interventions are also blind to the UBT personnel.