The　viscoelasticity　of　a　cationic　Gemini　surfactant,　2-hydroxyl-propanediyl-alpha,omega-bis　(dimethyldodecylammonium　bromide),　abbreviated　as　12-3(OH)-12,　solutions　at　a　total　concentration　of　80　mmol　L-1　in　the　presence　of　small　amount　of　anionic　surfactant,　sodium　dodecyl　sulfate　(SDS),　sodium　dodecylbenzene　sulfonate　(SDBS)　and　sodium　laurate　(NaL),　respectively,　were　investigated　by　steady　state　and　dynamic　rheological　measurements,　and　the　relationships　between　the　solution　properties　and　the　microstructure　of　wormlike　micelles　were　analyzed.　It　is　found　that　the　addition　of　small　amount　of　anionic　surfactants　has　a　tremendous　effect　on　the　viscoelasticity　of　12-3(OH)-12　solutions,　with　the　rheological　behavior　mainly　affected　by　the　structure　of　the　hydrophobic　part　of　anionic　surfactants　and　highly　sensitive　to　the　interaction　manner　of　the　anionic　additives　with　the　cationic　aggregates,　which　is　one　of　peculiarities　of　Gemini　surfactants.　(C)　2013　Elsevier　B.V.　All　rights　reserved.