Abstract: This paper introduces the implementation of using task driven experiment teaching based on Proteus in the experiment course “MCU C Language Program and Design”,and summaries the effect of the implementation method of task-driven experiment teaching. Practice has proved that Proteus can combine the abstract theory teaching and the vivid practice teaching by using Proteus to the development of system simulation, and has further shortened the distance of theory teaching and engineering practice. So it has the higher value of extension and application.