The invention relates to an intelligent control system for an electric fan. The intelligent control system comprises an infrared induction module, a distance measurement module, a modeling module, a speed adjusting control module and a driving module. The infrared induction module is used for detecting the temperature of each measured point of the electric fan in a preset range. The distance measurement module is used for measuring the value of the distance between each measured point and the electric fan. The modeling module is used for establishing a mathematical model for the temperature values of all the measured points and the values of the distances between all the measured points and the electric fan. The speed adjusting control module is used for outputting a speed adjusting control signal according to the mathematical model. The driving module is used for outputting a driving signal according to the speed adjusting control signal and driving the electric fan to adjust the rotating speed. According to the intelligent control system for the electric fan, the mathematical model is established for the temperature values of all the measured points and the values of the distances between all the measured points and the electric fan, and the speed adjusting control signal is output according to the mathematical model to control the rotating speed of the electric fan, so that the control precision of the system is high.