With large-scale distributed energy integration, the frequency of the power system is more outstanding, and demand response can provide solutions to this problem.Based on the demand side for evaluating the feasibility of frequency modulation, frequency modulation method as a starting point, on the demand side response in system FM research were summarized.First of all, it may take part in the load characteristic of the system frequency， and types of demand response are analyzed, which provide an overview of different types of demand response frequency modulation control strategy and modeling method.The paper introduces the demand of the new energy access response FM capability assessment method, finally combining the development of electric power system in China, it puts forward the demand side of FM promotion proposal.