Abstract: It is an important way to realize the pollution control of cultivated land and the safety of rice to explore the influence mechanism of cadmium reduction technology on the content of trace elements in rice. Based on heavy metal pollution of farmland repair experimentsite area of xiangtan city yuhu as test area, choose low cadmium accumulation of rice varieties (V) respectively, flood management (I), liming (P) and its combination technology (VP, IP, VIP), and other 6 kinds of cadmium reduction technology, through field experiment, to analysis the different cadmium reduction technology on soil, rice straw and influence mechanism of the trace element content in rice. The results show that: 1) Among the 6 cadmium-reducing technologies, lime application has the most significant influence on the change of trace element content, including increasing and decreasing effects, and plays a leading role in each combination technology; 2) from 6 kinds of technology, the comprehensive effect of cadmium in soil, molybdenum (Mo), iron (Fe) effectiveness enhancement, zinc (zinc), copper (Cu), manganese (Mn) effective state content decreased, while in the rice, zinc, Mn, Cu in rice accumulated relatively, Mo content in the straw, rice Fe levels rose overall. From the perspective of the normal growth requirements of crops and the nutritional value of seeds, it is advisable to adopt VIP, VP, V and I cadmium reduction technologies in the process of rice planting to minimize the impact on the absorption and accumulation of trace elements in rice and ensure safe and high-quality rice output.