The invention relates to a preparation method of knitted fabric with a bionic
composite structure. The preparation method comprises the step of knitting by using a computerized flat knitting
machine after designing the organization structure of the knitted fabric, wherein the main
body area of the knitted fabric is of a single-sided structure, a plurality of local areas dispersed in the main bodyarea are of double-sided structures, and the coil density of the single-sided structure, the coil density of the outer
layers of the double-sided structures and the coil density of the inner
layers ofthe double-sided structures are sequentially decreased; when knitting begins, the double-sided structure is knitted firstly, specifically, a needle selection device of the flat knitting
machine headis controlled to select knitting needles of a front needle
bed and a rear needle
bed at the same time, meanwhile, the knitting needle of the needle
bed I is controlled to perform looping knitting every other drawing needle, and the knitting needle of the needle bed II is controlled to firstly perform drawing needle looping and then perform tucking for 0-3 times on the same knitting needle of the needle bed I; and the knitting process of the single-sided structure comprises the steps of controlling the needle selection device of the flat knitting
machine head to only select the knitting needleof the needle bed I to perform full-needle knitting, and controlling the knitting needle of the needle bed II not to perform knitting. The fabric prepared by the method is light, thin and good in one-way
moisture conductivity.