Polyether used home-made silicone oil to replace conventional polyether,and dimethyl terephthalate,polyethylene glycol,ethylene glycol through transesterification, polycondensation,synthesized silicone hydrophilic finishing modified polyester fiber Agent.The results showed that:the introduction of silicone oil polyether chain,the synthesis of organic-modified polyester fiber hydrophilic finish than the traditional polyester fiber hydrophilic finish with a better softness and smoothness.