Abstract: The CX process of Mitsui and the Hostalen process of Basell for HDPE production are introduced. The characteristic and disadvantages of different catalysts for the slurry process are summarized for comparison, including the PZ and RZ catalysts of Mitsui, the BCH and BCE catalysts of Beijing Research Institute of Chemical Industry, the XYH catalyst of Liaoning Xiangyang Chemicals Group, the TH and Cr-series catalysts of Basell, and the JM-1 catalyst of Liaoyang Petrochemical Company. Some advices on the development and application of HDPE catalysts for the slurry process in China are proposed.