Two kinds of filament composite yarn,polyamide/fine denier adhesive 60/40+N(30 D/24 F)×4 and polyamide/fine Denier adhesive 60/40+N(30 D/24 F)×2,are developed by using the spinning method of Siro double core-wrapping.Based on the characteristics of high tensile strength,good elasticity,and high specific resistance of polyamide,anti-static pretreatment is carried out on polyamide to solve the spinning problem of fiber winding roller.The structure,properties and application of the two yarns are analyzed.The results show that the Siro filament composite yarn has high strength,wear resistance and is not easy to pilling.The yarn quality can be improved by increasing the number of core-wrapping fibers,and the textile with dehumidification function can be developed.