Coal-based direct reduction technology is one of the main development directions of copper slag treatment and utilization. Based on the analysis on the basic characteristics of copper slag，a test on preparation and roasting reduction of carbon-containing pellet with copper slag is carried out，the pelletizing performance of fresh pellet is optimized by single factor test，the main influencing factors and laws of the roasting reduction process are analyzed by orthogonal tests，and the optimal roasting process parameters are determined. The results show that the copper slag contains high Fe，Zn，Cu and other valuable elements with high recovery value. The pressured pellet with copper slag uses composite binder，and the strength index of the fresh pellet is higher. The roasting temperature has the most significant effect on the metallization rate and dezincification rate. The optimal process parameters are determined: the pressured pellet with copper slag is made of composite binder ( 6% organic binder + 2% inorganic binder) ，the drying temperature of the fresh pellet is 160 ℃，the drying time is 80 min，the carbon content [w( C) /w( O) ]= 1. 1，the roasting temperature is 1，225 ℃，and the roasting time is 40 min. At this time，the pellet falls with a falling intensity of 6. 9 times/( 0. 5 m) of carbon-containing pellet with copper slag，the compressive strength is about 70. 7 N/P，the moisture of the pellet after drying is ＜ 1. 5% ，the strength of the roasted pellet is 599. 4 N/P，the metallization rate is 75. 2% ，and the dezincification rate is 93. 8%.