The　rheological　behaviors　of　mixed　aqueous　solutions　of　sodium　hexadecyl　sulfate　(SHS)　and　a　bolaform　salt,　either　N,N′-ethanediyl-α,ω-bis(ethyldimethylammonium　bromide)　(Bola2Et)　or　N,N＇-　propanediyl-α,　ω-bis(trimethylammonium　bromide)　(Bola4),　were　investigated　by　steady-state　and　frequencysweep　measurements.　The　results　showed　that　long　worm-like　micelles　were　formed　in　both　systems　at　45　°C,　and　the　solutions　exhibited　high　viscoelasticities,　especially　the　SHS/Bola2Et　system　in　which　the　solution　had　very　high　elasticity.　The　zero-shear　viscosity　of　SHS/Bola2Et　was　as　high　as　2520　Pa·s,　and　the　system　was　gel-like.　These　results　were　attributed　to　the　formation　of　2:1　complexes　by　electrostatic　attraction.　Since　the　spacers　of　both　Bola　counterions　were　shorter　than　the　distance　between　quaternary　ammonium　ions　under　electrostatic　equilibrium,　the　generated　complex　in　shape　favored　formation　of　worm-like　micelles.　In　comparison,　it　was　difficult　to　induce　SHS　to　form　worm-like　micelles　by　the　addition　of　tetramethylammonium　counterions,　and　the　solution　exhibited　low　viscosity.　©　Editorial　office　of　Acta　Physico-Chimica　Sinica.