Aiming at the problem that traditional winter heating system in northern China is a nonlinear system with heating feedback lag, a new control system is introduced. Combined with the current situation of household heating, a heating valve DC motor control system based on improved PID is designed. The PID parameters of the motor control system are adjusted by genetic algorithm, and the optimal control curves at different angles are obtained and applied to the actual system. Meanwhile, long range radio (LoRa) is used to establish the information transmission between the user socket and the heating valve, and the temperature, angle and other information are sent to the heating company through the 485 bus to realize monitoring and control. Compared with the traditional control method, the proposed control method can improve the working performance and efficiency of the system.