The paper aims at observing the effect of solid drink containing soy peptide on volleyball players in recovery after matches and training through experiments. The method: 20 male second grade volleyball players are classified at random into a control group (n=7), a sugar group (n=6) and a peptide group (n=6). They are trained under heavy load for four weeks. The peptide group is supplied with sports drink containing 10g of soy peptide and 30g of sugar every day after training; and the sugar group is supplied with sports drink containing 30g of sugar; the control group is supplied with placebo similar to the peptide drink in both appearance and taste. The subjects are tested for their body compositions, RPE grade and biochemical indices of their blood before the experiment, two weeks after the training and after the experiment. Results: the mass and the lean body mass of the peptide group after the training are significantly increased compared with those before the experiment (P<0.05); the level of serum testosterone is significantly increased compared with that of the control group (P<0.05); however, the RPE grade of the peptide group significantly falls (P<0.01) with its serum CK also falling (P<0.05). Research conclusions: the soy peptide may promote the increase of the lean body mass of volleyball players, the increase of the serum CK after training, and it means that soy peptide has the functions of promoting the recovery of the damaged tissues of skeletal muscles and the reducing the seepage-out of the Creatine Kinase from the cells, thus having the function of resisting fatigue.