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Background The emergence of antibiotic‐resistant Helicobacter pylori strains in recent years has increased the need for finding an alternative in the post‐antibiotic era. One of the fields being considered for this purpose is antimicrobial peptides. The aim of this review was to provide an obvious scheme from the studied anti‐H. pylori peptides and to investigate their common features. Method First, all of the antimicrobial peptides with their anti‐H. pylori effects have been proved up to September 2018 were selected and their information including structure, mechanism of action, and function was reviewed. To achieve this, three databases of PubMed, Scopus, and Web of science were used. Results A total of 9 groups containing 22 antimicrobial peptides were found with demonstrated anti‐H. pylori effects. The nine groups included pexiganan, tilapia piscidins, epinecidin‐1, cathelicidins, defensins, bicarinalin, odorranain‐HP, PGLa‐AM1, and bacteriocins. Most of the antimicrobial peptides, not all, had common features such as the ability to kill antibiotic‐resistant strains, having α‐helical structure, being cationic, with high positive charge and isoelectric point. Conclusion Antimicrobial peptides with anti‐H. pylori effects have the potential to replace the antibiotics, especially in the post‐antibiotic era, if a rapid and low‐cost production method would be found.