To study the effects of mulching with Solanum photeinocarpum straw on cadmium (Cd)accumulation of Cyphomandra beracea seedlings,the pot experiment was carried out by mulching roots,stems and leaves straw of S.photeinocarpum on soil under Cd stress.The results showed that mulching straw on soil increased the biomass and photosynthetic pigment content of C.beracea seedlings,decreased the Cd contents in roots and shoots of C.beracea seedlings.Compared with the control,mulching with the root,stem and leaf straws of S.photeinocarpum decreased the Cd contents in roots of C.beracea seedlings by 25.32%,15.71% and 21.73%,respectively,and decreased the Cd contents in shoots by 13.73%,10.50% and 11.76%,respectively.In addition,mulching straw also increased the Cd translocation factor of C.beracea seedlings,the soil pH value increased significantly,but the exchangeable Cd content decreased.Therefore,mulching S.photeinocarpum straw on soil promoted the growth of C.beracea seedlings,increased the photosynthetic pigment content,and reduced the Cd contents in roots and shoots,and the root straw was the best.