Supply　chain　management　is　important　for　companies　and　organizations　to　improve　their　business　and　enhance　competitiveness　in　the　global　marketplace.　The　bullwhip　effect　problem　of　supply　chain　systems　with　vendor　order　placement　lead　time　delays　in　an　uncertain　environment　is　addressed　in　this　paper.　Among　the　numerous　causes　of　bullwhip　effect,　we　focus　on　uncertainties　with　respect　to　demand,　production　process,　supply　chain　structure,　inventory　policy　implementation　and　especially　vendor　order　placement　lead　time　delays.　Minimizing　the　negative　effect　of　these　uncertainties　in　inducing　bullwhip　effect　creates　a　need　for　developing　dynamical　inventory　policy　that　increases　responsiveness　to　demand　and　decreases　volatility　in　inventory　replenishment.　First,　a　dynamic　model　of　supply　chain　with　above　uncertainties　is　developed.　Then,　a　novel　uncertainty-dependent　robust　inventory　control　method　using　inventory　position　information　is　proposed.　Additionally,　the　maximum　allowable　vendor　order　placement　lead　time　delay　that　ensures　the　stability　of　supply　chains　and　the　suppression　of　bullwhip　effect　under　the　proposed　inventory　control　policy　is　explored　and　measured.　We　find　that　vendor　order　placement　lead　time　delays　do　play　important　role　in　supply　chain　dynamics　and　contribute　to　its　turbulence　and　volatility.　The　effectiveness　and　flexibility　of　proposed　method　is　verified　through　simulation　study.　(C)　2012　Elsevier　Inc.　All　rights　reserved.