The invention relates to a rapid self-checking system and method of a satellite comprehensive testing system. The rapid self-checking system of the satellite comprehensive testing system comprises a comprehensive testing system, a satellite simulator, a local area network, a star earth wired electric cable, a general control end and a testing server, wherein the comprehensive testing system charges and supplies power for the satellite simulator through the star earth wired electric cable, controls in a wired mode and measures the state quantity and simulation quantity; the satellite simulator simulates the satellite load, the wired control and the tested objects of the comprehensive testing system; the local area network is a medium and a carrier of a data communication network; the star earth wired electric cable is a medium and a carrier for checking the power supply, charging, wired control and measurement function of the comprehensive testing system by the satellite simulator; the general control end sends a network control order step by step to the satellite comprehensive testing system and the satellite simulator, receives the order response return, performs automatic closed loop judgment, and completes the self-checking flow; and the testing server distributes, processes, stores and afterwards retrieves and analyses various types of control data and testing data. According to the invention, the network communication function is realized, and an automatic closed loop testing technology is adopted for the general control end, thus the self-checking flow is executed automatically and the self-checking result is given.