Abstract: The study about the effect of various factors on preparing dydration of five antimony oxide two（HAP） and hydration of five antimony oxide two-phosphorus ammonium molybdate（HAP-AMP） has been carried out in this paper.The best preparation process of HAP and HAP-AMP under experimental conditions is found;at the same time,the HAP of Sr²⁺,HAP-AMP for Sr²⁺,CS⁺ adsorption properties were investigated.Results show that under the experimental conditions,HAP of Sr²⁺ the maximum adsorption capacity can reach 0.73 mmol/g,and the maximum adsorption capacity of HAP-AMP for Sr²⁺,CS⁺ can be up to 0.47 mmol/g and 0.32mmol/g,respectively;at the same time,HAP-AMP for Sr²⁺,CS⁺ adsorption is with significant selectivity.