The migration of DEHP in PVC gasket dipped in ethanol and n-hexane and its infiuencing factors were studied to find out the security of polyvinyl chloride (PVC) gasket. The tests showed that the migration quantity increased with the dipped time increase; the migration was easier when the PVC gasket was thinner; the migration of DEHP from PVC gasket to n-hexane was easier than to ethanol. It was suggested that PVC gasket should avoid contacting fatty food.