The epigenetic alterations like histone modifications , DNA methylation and others remarkable categories  including nucleosome remodeling and RNA mediated targeting have been strongly investigated  recently .In this way , beside the notable importance of DNA methylation ,the histone modifications are the most important issues in the  tumorogenesis and cancer progression. Moreover, the fluctuations of histone modifications particularly, the dysregulation of histone alterations is engaged directly in carcinogenesis. Conclusively, it is confirmed that aberrant epigenetic modifications along side with chromosomal losses and mutations are involved in cancer progression. Hence, histone modifications and DNA methylation have the impressive abilities and potential to be practical prognostic biomarkers in order to manage all aspects of cancers like diagnosis, controlling and treatment. In this review article, we focus the recent advances of these alterations specially, histone modifications in gastric cancer development.