The invention discloses a system for controlling a range hood by utilizing a cooker sensor. The system is characterized by comprising an information processing circuit, a heating sensing circuit, a pan temperature sensing circuit, a heating control circuit and a range hood control circuit, wherein the heating sensing circuit, the pan temperature sensing circuit, the heating control circuit and the range hood control circuit are connected with the information processing circuit, and the information processing circuit is used for controlling the heating control circuit and the range hood control circuit to operate according to feedback information of the heating sensing circuit, the pan temperature sensing circuit and the heating control circuit. According to the system, the pan temperature sensing circuit is arranged, so that a sensor for oil smoke does not need to be additionally arranged on the range hood, the judgment is accurate, the reliability is high, and the service life is long; the current cooking condition can be sensed, and the subsequent cooking condition can be automatically controlled, so that the variation trend of the oil smoke is indirectly sensed, intelligent control modes of a cooker and the range hood can be conveniently corrected in time, the condition that the air quantity changes before the oil smoke quantity changes is realized, and the intelligent control effect of the range hood is increased.