It is difficult to determine the dividing points in the current AMESim distributed simulation,and irregular division will further affect the real-time performance of simulation.To solve the problem,this paper takes the electromechanical systems of civil aircraft in collaborative simulation as the research object,and proposes a method for the task division of collaborative simulation of electromechanical systems based on the network model and the combination weighting method.Firstly,the distributed platform based on Data Distribution Service (DDS) serves as a basis of communication,so as to ensure the synchronization of distributed simulation.Secondly,the topological attributes of the network model are introduced into the collaborative simulation of electromechanical systems of civil aircraft,and the simulation is analyzed hierarchically.The measured values of the simulation attributes are calculated by using the entropy weight method,so as to determine the edge weights.Simulation results show that the simulation task division method can reduce the calculation time of the model by 57.2% without simplifying the model.