Forward osmosis (FO) uses osmotic pressure of solution on both sides of membrane to drive water through membrane. FO is a kind of green technology with low energy consumption and high recovery rate. It has application prospect in wastewater treatment and seawater desalination. Meanwhile, the obstacle of the commercial application of FO is that the process suffers from the issue of concentration polarization. The charged membrane has the double effect of sieving and Donnan effect during the separation process, which can effectively improve the separation efficiency, water flux and pollution resistance of the membrane. This paper introduces the preparation method of charged forward osmosis membranes, and discusses the influence of charge properties and number of charged membranes to fouling, hydrophilicity, water flux, retention rate and reverse effect of solute diffusion and other factors in FO process. The paper will provide reference for future research in FO membrane materials and the application of forward osmosis technology.