The expression levels of CCAT2 were significantly up-regulated in 108 cases GC tissues compared with adjacent non-tumor tissues by qRT-PCR analysis. Higher CCAT2 expression was correlated with tumor size, lymph node metastasis and TNM stage in GC patients. Further function analysis demonstrated that knockdown of CCAT2 inhibited the cell migration and invasion, whereas, the overexpression of CCAT2 showed the opposite results in GC cells. Our results also demonstrated that CCAT2 promoted the GC cells EMT by downregulated the E-cadherin expression and upregulated the ZEB2, Vimentin and N-cadherin expression.