Abstract: Conventional treatment processes are difficult to completely degrade and remove the toxic and harmful pollutants in landfill leachate. Therefore, advanced oxidation processes are needed to further treat the landfill leachate. Fenton process and its derived processes are competitive in the treatment of landfill leachate. Focusing on the principles, treatment effect and technical development of Fenton process and its derived processes for the treatment of landfill leachate, the latest research progress of this technology was reviewed, and its development history, key technical steps and latest technology application trends were tracked. The advantages and disadvantages of different derivative processes were compared and analyzed. Based on different landfill leachate and corresponding optimal process conditions, and considering comprehensively the problems of safety, economic feasibility and high removal rate, it was pointed out that the compound method and those combined with other processes had better treatment effect and application value. The application prospects and key research directions of Fenton process for the treatment of landfill leachate were prospected, in order to provide a reference for the research, development and popularization of this method for the treatment of landfill leachate.