In order to explore the safety production of the salt chemical plant, the feasibility of FGS system was proved, and the prospect of the safety of the salt chemical plant was analyzed.Based on the research on FGS system and combined with the application of FGS system in Changchun CRC FGS System Liquefied Natural Gas (LNG) Co., Ltd., the safety features of salt chemical industry plant were compared and feasibility was fully evaluated. The results show that the process of salt chemical plant is complex with huge product risk. It is necessary to rely on advanced intelligent solutions for hardware and software combination to form a three-dimensional protection for automatic alarming, fire control linkage, intelligent command and field drilling.New technology and design concepts with traditional DCS, SIS system are adopted by FGS internal heat system to realize production management, transmission, display and alarm and other security functions, which greatly improves the safety of devices.It can be put into operation for salt chemical plant.