During the teaching of the major Internet of Things (IoT), we introduce the cases of intelligent transportation and build a simulation teaching environment with the hardware environment composed of traffic sand table, IoT collection equipment and intelligent vehicles and the software environment consisting of simulation experiment software, experiment teaching management software and open online system. On this basis, we design simulation experiments that can connect with the offline laboratory and the online system, forming a new integrated teaching mode of “teaching, learning and doing” and improving the teaching effect.