Abstract: A method for stimulating an induced insect resistance of rice is provided, which is effective to rice planthoppers, including Nilaparvata lugens, Sogatella furcifera, and Laodelphax striatellus. The present invention increases the resistance of the rice against rice planthoppers through p-Fluorophenoxyacetic acid, thereby decreasing damages of the rice planthoppers to the rice. Through applying the p-Fluorophenoxyacetic acid having a certain concentration to the rice, the rice generates the induced resistance against the rice planthoppers, which obviously decreases a survival rate of nymphs of the rice planthoppers.