In the IoT course experiment of engineering degree graduate students in Colleges and universities, there is a lack of experimental teaching links combined with engineering projects. This paper designs and implements a 5G edge computing grain depot ecological accurate measurement and control system and engineering experimental teaching platform, which can not only solve the technical difficulties to be overcome in modern grain depots, but also realize the teaching of graduate engineering experiment courses. The experimental teaching effect in the past three years shows that 35 sets of engineering experimental teaching software and hardware devices developed have played an important role in graduate course experiment and engineering training.