With the rapid development of microgrid, its operation and economic optimization control have attracted more and more attention. Traditional economic optimization control is centralized control, which is faced with single point of failure, large resource consumption and other problems. Distributed control can solve the above problems well, and the economic scheduling problem in microgrid can be solved by combining consensus algorithm. The system scheduling process requires the communication network to complete the information interaction, but the communication network is usually affected by the noise. For this problem, a fully distributed economic scheduling strategy based on finite time consensus is proposed to deal with the interference of noise, and in a distributed system of minimum power generation cost and environmental pollution as the goal . By introducing consensus gain function to suppress noise, the completely distributed environment/economic optimal scheduling is realized. The simulation results show that the fully distributed scheduling strategy proposed in this paper can suppress the interference of noise and achieve good optimization effect while ensuring consistent convergence.