By conducting field experiments on soda meadow alkaline soil of Anguang town,Da’an City in Jilin Province,the effect of different dosage of MM modifier on chemical properties of the surface soil was studied.The results showed that rice cultivation could decrease soil electrical conductivity and pH obviously.The soil pH decreased 0.4~0.8 after applying MM modifier.The soil electrical conductivity was 0.2ms/cm lower than CK.The contents of soil organic matter and available N and P increased with the MM modifier levels increasing.