As communication technology develops, the digital communication experiment platform is facing the challenge in operating efficiency and processing speed. Using MATLAB as the central control unit, this platform controls the signal transmitter, the signal receiver and the digital power source by exclusive communication interfaces written for the experimental instruments involved. Digital signal processing is completed in MATLAB. The programmable instruments and software are unified in this platform to complete the tasks of modulation, emission, reception, demodulation, data acquisition and process monitoring, which are key parts in digital communication. The experimental platform can improve the automation and efficiency of communication experiment system. The open software system allows users to develop new functions further according to the different conditions.