The invention provides a preparation method of super-soft crease-resisting type composite yarns, aiming at solving the technical problems in an existing preparation method that yarns do not have good flexibility and wearing resistance, the function is single and the like. The preparation method of the super-soft crease-resisting type composite yarns comprises the following steps: a, doubling: doubling 3 to 5 polyamide filaments into one strand of polyamide filament parallel yarns through a doubling device; b, twisting: twisting 2 to 4 strands of the polyamide filament parallel yarns and 1 to 2 polyester filaments into one thread of twisted yarns through a twisting manner, so as to obtain composite yarns; c, sizing: putting the composite yarns into an environment with the temperature of 90 DEG C to 120 DEG C for 20Min to 40Min; d, coating: padding the composite yarns into polytetrafluoroethylene, and airing to obtain the super-soft crease-resisting type composite yarns; e, packaging: packaging the coated composite yarns through a packaging device. The preparation method of the super-soft crease-resisting type composite yarns has the advantage of more functions.