Abstract: Taking into condition the development of the sulfur recovery process at home and abroad in recent years，the law of the development of the sulfur recovery process in Sichuan and Chongqing is summarized，and the prospect of the sulfur recovery technology trends is discussed.By comparing the characteristics and application of online technology，the process improvement and the process design development are proposed.Because the process of existing sulfur recovery can not meet the state′s environmental requirements in Sichuan and Chongqing area，the paper presents the key equipment for the improvement and redesigns process to overcome the condition between dynamics and thermodynamics in sulfur recovery process.In order to achieve the purpose of energy saving，the paper proposes a novel lowtemperature catalyst for the development.Put forward the idea of combining the advantages of existing technology so as to improve the process stability and sulfur recovery.It is benefit to the new sulfur recovery and tail gas treatment process for further development and research.

Key words: natural gas, purify, sulfur recovery, technology, tail gas treatment