Abstract: To study the effect ofAstragalus sinicus on cadmium effectiveness in Cd-contaminated paddy soil and cadmium accumulation in rice plant, a field experiment was conducted to study the effect ofAstragalus sinicus on biological yield, Cd content of rice, soil pH value, and available Cd content in soil, local traditional fertilization was used as CK. The results showed that the application of Astragalus sinicus promoted rice growth, compared with the treatment of chemical fertilizer, the average yield of overground part increased by 11%. At the same time, the content of Cd in rice decreased, the Cd content in rice grains decreased by 23.8% on average, and the Cd content in rice straw decreased by 50.2% on average, the average cadmium accumulation of rice decreased by 40.8%. The application ofAstragalus sinicus increased soil pH value and reduced the bioavailability of Cd in soil. The correlation analysis showed that the content of available Cd in soil was negatively correlated with pH value, while Cd accumulation in paddy rice was positively correlated with available Cd content in soil. The study shows that in Cd-contaminated paddy soil, the application of chemical fertilizer alone should be avoided, and the application ofAstragalus sinicus which is a representative green manure could not only increase the yield of rice, but also reduce the Cd activity in the soil and Cd accumulation in the rice.