The space-air-ground integrated network (SAGIN) is a comprehensive and complex network. Network emulation plays an important role in the validation and evaluation of SAGIN's new technologies. Aiming at the characteristics of heterogeneous nodes and the large-scale and dynamic topology of SAGIN, we propose an efficient topology emulation architecture for SAGIN, named SAGINHTE-Stack. To improve usability, scalability and efficiency, we propose three technologies: unified construction technology of the object model, static topology rapid deployment technology and topology dynamic synchronization technology. The experimental data show that the unified construction technology of the object model can complete the uni-fied model construction for various heterogeneous nodes. Static topology rapid deployment technology realizes the construction of the topology model at the millisecond level and completes the rapid deployment of the emulation topology. Topology dynamic synchronization technology realizes the parsing of the topology model change behavior and the synchronization of the topology model; moreover, topology dynamic synchronization technology completes the fast synchronization of the emulation topology.