In order to solve the problem that the number and types of low-voltage distribution network equipment are increased significantly in the process of substation construction, a plug and play method and Implementation for low-voltage distribution Internet of things is proposed, the technology is used to realize the plug and play of the side devices in the cloud master station. The plug and play service is based on the distribution Internet of things platform. Firstly, the side devices are powered on and then self registered in the distribution Internet of things platform through the plug and play service. Then the distribution Internet of things platform pushes the online information to the cloud platform to complete the plug and play, finally, the simulation environment is built to verify that the plug and play service of distribution Internet of things can realize the self discovery and self description of equipment, and reduce the field workload.