Abstract: The antistatic capability of bisquaternary ammonium salt with special structure on the polyester fabric was studied with a view to improving the antistatic capability of the polyester fabric.The induction static voltage of polyester fabric added with bisquaternary ammonium salt was determined on the induction static instrument.The effects of its structure,concentrations,baking temperature and time on antistatic capability for polyester fabric were discussed.The results show that the N,N-′bis(dimethyl octadecyl)-3-oxa-1,5-penta diammonium bromide(type six) used as antistatic agent for polyester fabric has better antistatic effect under such conditions as the concentration of 1.5 g/L,baking at 110℃for 150 s.