Abstract: Through the analysis of fuzzy control and PID control theory and system control performance, this paper designs a kind of fuzzy PID greenhouse control system, improves the control precision and control response time of greenhouse system, uses fuzzy reasoning principle to obtain PID control input parameters, uses different clarity schemes to construct four different fuzzy control schemes, and uses simulation test to realize fuzzy PID control The control system is compared with the traditional PID control method. The experimental results show that the overshoot of the fuzzy PID control system is less than 20%, which is obviously less than 28% of the traditional PID control system. Among the four fuzzy PID control schemes, the response time of two schemes is better than that of the traditional PID control system.