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The space-based information network with satellite network as the core is the main development direction of modern communication network. The high-precision time-frequency synchronization of satellite network is the basis for the normal operation of space-based information network, and it is also an essential prerequisite for satellite application studies; Aiming at the time-frequency synchronization of space-based information network, the modeling and simulation technology of space-based time-frequency synchronization network based on consistent clock synchronization method is studied. Through the inter satellite measurement link established by adjacent satellite nodes, high-precision clock synchronization is achieved; The requirements and functional composition of the space-based time-frequency synchronization network modeling and simulation system are analyzed, and the satellite network scenario simulation and the simulation of the consistent clock synchronization method are realized; The simulation results show that the time error of logical clock is better than 0.1 ns, the relative frequency deviation is better than 1e-10, the time interval error is better than 0.1 ns, the time deviation is better than 10 ps@1000 s, and the Allen variance is better than 1e-15@1 h.