Abstract: Aiming at the phenomena of complex data，strong coupling and poor control accuracy in the environmental control of agricultural greenhouse，an adaptive control strategy combining multi-sensor data fusion，decoupling control and fuzzy PID control is proposed，and the coupling controller and fuzzy PID controller are designed. Through the weighted optimization of the median value average filtering algorithm，the optimized data are input into the controller for processing，and the environmental data are tracked in real-time to realize the accurate control of the agricultural greenhouse environment. The control system is simulated by Simulink，and the results show that compared with traditional PID control and fuzzy PID control， the response speed and stability of this control strategy are significantly improved，and in the practical application of intelligent control of agricultural greenhouse，good results are obtained.

Key words: agricultural greenhouse, fuzzy PID control, decoupling control, median filter