The utility model belongs to a communication device, and particularly relates to a small-sized electromagnetic-pulse-radiation-resistant interface window used for vehicles. A lodging mechanism interface in an interface window cabin is connected with lodging mechanism control equipment, an ultra-short-wave interface is connected with an ultra-short-wave radio station, a microwave interface is connected with microwave communication equipment, a voice interface is connected with voice equipment, and a Beidou feeder interface is connected with a Beidou transmitting/receiving machine. The ultra-short-wave interface, the microwave interface and a Beidou interface which are arranged outside the interface window cabin are respectively connected with corresponding antennas, and the lodging mechanism interface is connected with cabin external antenna lodging mechanism equipment. The small-sized electromagnetic-pulse-radiation-resistant interface window has the advantages that the interface window is simple in design and high in reliability, not only can realize undistorted through connection of various types of microwave radiofrequency, radiofrequency and direct-current mixed signals, but also realizes protection of high-frequency and high-power electromagnetic pulses such as thunder surge, high-altitude electromagnetic pulses, nuclear electromagnetic pulses and the like, and meets requirements of high reliability and safety design of vehicular microwave radiofrequency equipment to external complex electromagnetic environments.