Abstract: In order to construct a channel simulation and verification platform with high simulation accuracy, high flexibility and low cost for large-scale battlefield communication scenarios, the system architecture of the large-scale-scenario channel simulation is studied. The function and performance characteristics of the battlefield scenario planning server, battlefield situation display module, channel coefficient calculation server, channel emulator and external test equipments are explained. Such key technologies as the broadband large-dynamic radio frequency （RF）acquisition, the realization of large-scale channel simulation matrix, channel sounding and modeling, etc. are analyzed. The development trend of the channel simulation system for future intelligentialized communication countermeasure evaluation is prospected. The mentioned system architecture and key technologies can help to build an efficient in-field testing system and can improve the accuracy and scientificalness of measurement and evaluation of the communication equipments.