Abstract: A field experiment was conducted to test the effects of high and low herbivorous insect stresses on the growth, development and yieldrelated traits of insectresistant transgenic rice. Three Bt transgenic rice Bt63, R1 and R2 were selected as the test materials, and nontransgenic rice Shanyou63 was taken as the control. The differences in the vegetative growth, seedsetting, and stem borer resistance between transgenic and nontransgenic rice were compared. Under herbivorous insect stress, the transgenic rice fully displayed the stem borerresistance of exogenous gene. Under the high stress, the stem borerdamaged degree of the three transgenic rice lines was much lower than that of the control. The plant height, tillers per plant, aboveground fresh mass, panicle length, panicle fresh mass, productive panicles per plant, filled grains per plant, grain mass per plant, seed setting rate, and 1000grain mass of the three transgenic rice lines excelled the control, but had no significant differences except plant height, tillers per plant, and panicle length. Therefore, introducing exogenous Bt gene into rice had no negative effect on rice seedsetting, and high herbivorous insect stress had less impacts on transgenic rice yield.