The invention discloses a making method for cuprammouium rayon/viscose fiber antibacterial blended fabric. Selected warp and weft materials comprise, by mass, 35-40 parts of cuprammouium rayon, 40-90 parts of viscose fibers, 20-25 parts of silk, 8-15 parts of bamboo charcoal fibers, 30-35 parts of cotton fibers, and 8-18 parts of super fine denier polyester; scutching procedures comprise primary washing and fine washing steps, in the primary washing step, the cuprammouium rayon, the viscose fibers, the silk, the bamboo charcoal fibers, the cotton fibers and the super find denier polyester are put into a washing machine in a classified mode, the bath ratio is 1:30-50, mild detergent is added, the dosage of cleaning agent is 4-5 g/L, the water temperature ranges from 55 DEG C to 65 DEG C, and the washing time ranges from 0.5 h to 0.8 h; in the fine washing step, the cuprammouium rayon, the viscose fibers, the silk, the bamboo charcoal fibers, the cotton fibers and the super find denier polyester are immersed in clear water, the bath ratio is 1:11-15, a mild detergent solution with the mass concentration ranging from 26% to 32% is added, the addition quantity in the water is 6-9 g/L, processing is conducted for 0.5-0.8 h, and the temperature for the fine washing ranges from 66 DEG C to 72 DEG C.