For　the　distortional　buckling　of　cold-formed　thin-wall　steel　members,　the　Direct　Strength　Method　(DSM)　is　a　recently　adopted　design　approach　by　foreign　standard,　and　Chinese　professional　standard　Technical　specification　for　low-rise　cold-formed　thin-wall　steel　buildings　present　the　calculation　formulas　based　on　the　Effective　Area　Method　(EAM).　The　key　of　both　methods　is　the　elastic　distortional　buckling　present,　the　calculation　methods　about　it　are　over　conservative.　Compare　the　calculation　results　of　method　in　AISI　S100　with　the　one　calculated　by　software　CUFSM　,for　C　and　Z　sections　in　bending　and　axial　compression　loading　respectively　in　the　North　American　Specifications　for　Cold-Formed　Steel　Structural　Members　(AISI　S100).　This　paper　presents　revised　simplified　methods　for　calculating　the　elastic　distortional　buckling　stress.　The　new　methods　yield　more　accurate　results　but　similar　computation　cost　compared　to　the　existing　methods.