An alternate twill knitted net of blended yarn with multicolor jacquard is composed of total yarn, which is formed by mutual intertwining of cotton yarn, cellulose yarn and modified wool yarn; part of the total yarn forms a yarn coil by weaving, wherein, the rest total yarn floats in front of the yarn coil and forms an embossing like floating thread, the embossing is intertwined and fixed with the yarn coil through the total yarn and forms a sesame pattern at the back of the yarn coil. The alternate twill knitted fabric of the blended yarn with the multicolor jacquard solves the problems in count ratio of three cellulose of the blended yarn, blending homogeneity and twist degree, improves the knitting property and physical properties of the product, has the distinct characteristics of hydrophilicity, softness, smoothness, air permeability, UV resistance, consistent color, soft luster and the like.