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The aim of this study was to evaluate the impact of education via WeChat on the quality of bowel preparation in patients undergoing colonoscopy through a meta-analysis of randomized controlled trials. Randomized controlled trials of bowel preparation education provided via WeChat for patients undergoing colonoscopy were screened from databases such as PubMed, Web of Science, Cochrane Library, and Embase. Papers published from the date of database construction to May 1, 2021, were extracted, and a meta-analysis was performed using Review Manager software. A total of four randomized controlled trials were included in the meta-analysis. The results showed that for patients undergoing colonoscopy, education via WeChat significantly improves the quality of bowel preparation for colonoscopy, reduces the insertion time, and increases the adenoma detection rate and the patient's compliance and willingness to repeat bowel preparation. In conclusion, education via WeChat before colonoscopy can significantly improve the quality of bowel preparation., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)