Based on the serious environmental pollution, two novel clean coal technologies   PFBC-CC and IGCC,have been using in coal power generation. The processes of the two technologies and the model power station at home and aboard were detailed, the advantages and disadvantages of the two technologies were also analyzed. The IGCC was superior to the PFBC-CC in clean production, and a new view was put forward, which was the coal-burning tail gas was recycled in order to realize the zero-emission and low-carbon economy.