In response to the problems of high labor consumption and poor energy efficiency in the operation of the lightingsystem in a power plant，an intelligent control system for power plant lighting based on wireless internet of things is constructed.By presenting the functional design and the overall system framework design，and comparing different wireless communication networks and network controller implementation schemes，references are provided for the design of intelligent lighting systemsin various types of industrial places. The equipment reconstruction and system construction process in a power plant is alsointroduced，including the reconstruction of lighting circuits，the communication between illuminance sensors and current transformers，the fabrication of DC 24 V switching power supplies，and client configuration，so as to provide references for other power plants.