The embodiment of the invention provides a satellite network simulation method and device, an electronic device and a readable storage medium, and relates to the technical field of space. The method comprises steps of establishing a simulation scene of a satellite network simulation system, wherein the satellite network simulation system comprises a physical device and a simulation device; through the network virtualization technology, virtualizing a physical port in physical nodes in the physical device into multiple virtual ports and establishing mapping relations between the virtual ports and multiple ports of simulation nodes in the simulation device; starting the satellite network simulation system, and simulating the physical nodes and the simulation nodes according to the simulation scene; and after the simulation is finished, obtaining simulation results of the physical nodes and the simulation nodes. According to the invention, one physical port is virtualized into multiple virtual ports through the network virtualization technology, a computer is enabled to provide a semi-physical simulation service, so hardware cost required by establishment of the semi-physical simulation system is reduced.