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Aiming at the problem that the current manual monitoring method is affected by the interference signal and the monitoring accuracy is low, the design of a multi-channel spectrum monitoring system for satellite communication measurement and control station based on the switch matrix is proposed. Design the overall structure of the monitoring system, obtain the remote control signal spectrum by accessing the baseband uplink intermediate frequency signal, and use the USB interface to connect the computer with the spectrum analyzer to realize the time-sharing display of the four downlink carrier signals under the spectrum analyzer. Using serial EEPROM devices, the internal integrated bus is two-wire serial for data transmission, MAX3232 chip is selected for level conversion, and Windows 2000 is used as the carrier to realize the interaction between PC and spectrum analyzer. Analyze the transmission signal, the delay time of the transmission signal and the corresponding time difference, use the switch matrix to control the interference signal, and design the software process of the multi-channel spectrum monitoring system based on the switch matrix to realize the multi-channel spectrum monitoring control. The experimental results show that the system has a small deviation between the monitoring signal strength and the actual value, and the monitoring accuracy is high, which can realize the efficient monitoring of satellite communication signals.