The composite of iron oxide catalyst coated amidoxime was prepared by coordination precipitation method for catalytic decomposition of H2O2.This thesis studies the effect of the preparation conditions including the concentration of iron,the response time of water bath,reaction temperature of water bathe and stoving temperature on the catalytic decomposability of hydrogen peroxide of iron oxide catalyst coated amidoxime.Besides,it not only researches the catalyst structure by SEM and EDS,but also investigates the reusage and regeneration of catalyst.The result shows that the prepared iron oxide catalyst coated amidoxime has favorable capability for the reusage and regeneration on the condition that the concentration of iron is 0.20?mol/L,the water bath temperature is 80 ℃,the heat-up time of water bath is 2?h and the stoving temperature is 140 ℃.