Abstract: Progresses in catalyst and process technology for sulfur recovery since the 1970s are reviewed. The development of the LS series catalysts for sulfur recovery and off-gas hydrogenation, and the performance and industrial applications are summarized, and the localization of the imported catalyst of sulfur recovery for large scale plant is described in detail. The process technologies developed by SINOPEC with complete self-owned intellectual property is summarized based on digestion and absorption of the imported plant and relevant advanced technologies and experiences. The design principles and advices for newly built large scale sulfur recovery plant are proposed.