The invention relates to an elegant high-color-fastness knit fabric which comprises a knit fabric body, wherein an anti-radiation layer, an anti-static layer and a waterproof layer are arranged on theupper surface of the knit fabric body in sequence; an antibacterial layer, a flame retardant layer, a waterproof layer and a close-fitting layer are arranged on the lower surface of the knit fabric body in sequence; a lining fabric layer is arranged on the back surface of the close-fitting layer; the density of warp yarns of the lining fabric layer is 195 pieces/centimeter, and the density of weft yarns is 173 pieces/centimeter; the warp yarns and the weft yarns are interwoven into rhombic organizations; each rhombic organization consists of 10 weft yarns and 15 warp yarns. The elegant high-color-fastness knit fabric has stereoscopic impression, and also has functions of resisting bacteria and wear, being high in color fastness, retarding flame, preventing radiation, water and static electricity and the like.