MicroRNAs, known as small noncoding MiRNAs, 19 to 24 nt in length, are important 
gene regulators and recognized as key players in carcinogenesis. The mechanism 
lies in that the MiRNAs can conjugate with their targeted mRNA and then lead to 
the targeted mRNA degradation or repress their translation. Bioinformatic 
analysis indicates that each MiRNA can regulate hundreds of gene targets and 
could serve functionally as "oncogenes" or "tumor suppressor genes", and 
therefore regulate multiple cellular processes relevant to carcinogenesis and 
cancer progression. Up to now, there have been a lot of studies about the MiRNAs 
which may play an important role in stomach neoplasms. The purpose of this paper 
is to have a review of the present studies on the MiRNAs related to stomach 
neoplasms, in order set basis for further study and their clinical application.