Chloride　ion　migration　tests,　or　so　called　electrical　accelerated　tests,　for　testing　the　chloride　diffusion　coefficient　of　cementitious　materials　are　reviewed.　The　ion　migration　theory　of　electrical　accelerated　tests　is　presented.　Four　main　testing　methods　that　include　chloride　penetration　test,　steady　state　migration　test,　unsteady　state　migration　test　and　salt　saturated　conductivity　test　(SSCT)　are　introduced,　and　their　theoretical　calculations　of　chloride　diffusion　coefficient　are　described.　Through　analysis　of　the　theoretical　calculations,　it　is　found　that　all　electrical　accelerated　tests　are　based　on　ion　migration　theory,　although　different　suppositions　are　adopted.　Among　the　migration　tests,　steady　state　migration　test　is　the　most　suitable　to　determine　the　chloride　diffusion　coefficient.　D-CIPT,　D-RCM　and　D-SSCT　calculated　by　chloride　penetration　test,　unsteady　state　migration　test　and　SSCT　can　be　used　to　identify　the　resistance　to　chloride　ion　penetration　by　cementitious　materials,　but　not　the　real　diffusion　coefficient　values.