beta-Cyclodextrin was blended with poly(vinyl chloride) to study the influence of beta-cyclodextrin on the leaching of phthalate ester from PVC. beta-Cyclodextrin was found to reduce the migration of phthalate ester. The considerable effect of beta-cyclodextrin on the leaching of phthalate ester was traced to the formation of an inclusion complex formation between the two components.