Abstract: Traditional water treatment technology is still faced with many problems,such as complex system,high operating cost,easy scaling and corrosion. Therefore,it is necessary to adopt an integrated multi-functional coupling system,which can take into account the functions of desalination and anti-scaling to remove the pollutants in the wastewater. Electro-sorption technology is a new water treatment technology for water purification and desalination,which can effectively remove impurity ions from water without scaling under the premise of low energy consumption. In this paper,it was summarized the development history of electro-sorption theory,the principle of electro-sorption and the main points of electric double layer theory,the structure of electro-sorption and its working process,etc. At the same time,several main electro-sorption materials and their advantages and disadvantages were introduced. Based on increasingly strict environmental protection requirements,electro-sorption technology is expected to be widely used and developed in the power industry due to its technical advantages such as low energy consumption,low cost and no secondary pollution.