Abstract:Soy peptides were prepared by deep processing of soybean protein， and soybean peptides as raw ma－ terials combined with fruit juice to develop a solid drink sports supplements， the sport supplements had excel－ lent sensory experience， rich nutritional composition and quick solubility， and select bodybuilders and fitness for 6 months gain muscle experiments， the experimental group of bodybuilders and fitness were significantly in－ creased muscle mass and body fat reduction than control group， and the soy peptide sport supplement had suffi－ cient security.