Abstract: Using 200 kg coking-oven, the quality of the coke from the co-coking of coal with PS (polystirene) and WMP (waste mixed plastics) was studied to provide fundamental data for further industrial application. The results showed that the yield of metallurgical coke decreased obviously and at the same time, the quality of coke also decreased with the increasing of percentages of waste plastics added. Though the yield of metallurgical coke was much lower for WMP addition, co-coking of coal with WMP got better coke quality indexes of M40, M10 and CSR than co-coking of coal with the same ratio of PS. It was proved that co-coking of coking coal only with waste plastics simply couldn't be applied in industry as a solution of “white pollution”.