Abstract: Natural gas is the key energy for low-carbon transformation, and its efficient desulfurization technology is the core link to realize the clean utilization of natural gas. The technical progress and challenges of the triazine injection method in the field of natural gas desulfurization were introduced. The reaction mechanism, process innovation and waste liquid treatment strategy were emphatically analyzed. Triazine-based desulfurizing agents remove sulfides through nucleophilic substitution reactions, with reaction rates affected by the pH of the reaction solution, the reaction temperature, and the substituent group, which has significant advantages for offshore platforms and remote gas fields. The industrial application results of the triazine injection method showed that the cost of single well natural gas treatment can be reduced to 0.04-0.10 CNY/m³. However, the technology still has bottleneck problems, such as high energy consumption of waste liquid treatment and a limited recycling path. In the current wastewater treatment technology, the acid precipitation-oxidation coupling and nanofiltration membrane separation can reduce COD to 120-230 mg/L, while graphene foam adsorption can achieve 99% COD removal rate. In view of the future development, the following suggestions are put forward: Firstly, constructing a bio-based triazine derivative system to reduce the environmental footprint. Secondly, developing thiol directional removal functional materials to enhance the removal ability of organic sulfur. Thirdly, innovating the resource path to modify DTZ waste residue into rubber filler. Through the coupling of the above processes, the triazine technology can be promoted to develop in the direction of low carbonization and intelligence, which can provide an important technical reference for the development of high-sulfur gas fields and the realization of the carbon peaking and carbon neutrality goals.