Abstract: Two kinds of amino resins were prepared with chloroacetylated polystyrene （PS-Acyl-Cl） as carrier to replace chloromethyl polystyrene by reacting with ethylene diamine （EDA） and hexamethylene diamine （HMD）. Such influence factors as reaction time，temperature，molar ratio of raw materials，and solvents were discussed. Under the optimum conditions，the loading amount of ethylene diamine and hexamethylene diamine on the resin could be up to 1.60 mmol/g and 2.6 mmol/g，respectively. While，the loading amount of hexamethylene diamine was apparently higher than that of ethylene diamine under the same conditions. In this method，the drawbacks of preparing chloromethylated polystyrene resin were avoided，and side reactions，such as secondary cross-linking and multi-substitution could be eliminated. As active intermediates，the amino resins can be derivatized to obtain many functional media.