Abstract: Taking the greenhouse monitoring system as a case study, this paper proposes an optimization technique based on predictive fuzzy PLC control for the limitations of traditional FLC control in complex environments, which uses fuzzy logic to fuzzy environmental variables and combines with a prediction algorithm to predict the future state, so as to achieve precise control and optimized regulation of the greenhouse environment. Through experimental verification, the optimization technology can improve greenhouse production efficiency, reduce energy costs, and guarantee the growth quality and yield stability of crops. The results of the study can provide new ideas and methods for intelligent monitoring and optimization of the agricultural production process.