Abstract： Objective To observe the effect of Twist gene interference on the migration and pAkt protein expression of Rhesus retinal vascular endothelial cell line. Methods The Rhesus retinal vascular endothelial cells (RF/6A) were divided into Twist interference plasmid group, negative control group, and phosphate buffered solution (PBS) group; plasmid vectors were transfected via liposome gene transfection method. Migrated endothelial cells was detected and counted by Transwell chamber assay. Matrigel was used in endothelial-cell tube formation; the inhibitory effect of Twist gene interference on endothelial-cell tube formation was observed. The effect of Twist gene interference on the expression of pAkt protein in RF/6A cells was measured by Western blot. Results The number of migrated endothelial cells in Twist interference plasmid group was lower than that in the negative control and PBS group (F = 23. 786, P =0. 000). The number of endothelial-cell tubes in Twist interference plasmid group was apparently less than that in the negative control and PBS gorup (F=7. 159,P=0. 014). The expression of pAkt protein in Twist interference plasmid group decreased markedly. Conclusion Twist gene interference can suppress the migration of retinal endothelial cells via inhibiting the expression of pAkt protein.