The primary influential factors, capacities of adsorption and desorption and mechanism for the purification of Cu2+_bearing wastewater by using 13X zeolite were experimentally investigated. The results showed that the optimal pH for the removal of Cu2+was 7~10 (alkalinity), the ratio of adsorption reached a plateau value when the adsorption time was 10 min. and increased with increasing temperature and reached a plateau value at 50℃. The volume of treated wastewater that contained 30 mg/L Cu2+by using 1 g zeolite was 1 471.34 ml, and the adsorption capacity was 43.40 mg/g. The concentration of wastewater after treatment attained 333 the national standard of drainage water. Spent 13X zeolite could be regenerated by sturated solution of NaCl without noticeable loss of capacity. Adsorption and ion exchange made up the major mechanism for the purification of wastewater. Experimental researches indicate that 13X zeolite is suitable for the purification of Cu2+_bearing wastewater.