Preferred reporting items for H. pylori and rosacea. Systematic searches were conducted in Wanfang Data, CQVIP, Springer, Public Health Management Corporation (PHMC), CNKI and Pubmed, from January 1st 2008 to Mar. 1, 2018, using Helicobacter pylori and rosacea to retrieve the literature. The total is 247:19 in Wanfang, 4 in CQVIP, 0 in Springer, 121 in PHMC, 2 in CNKI and 101 in Pubmed. According to the inclusion and exclusion criteria, 27 articles considered or confirmed the correlation between H. pylori and rosacea.