[Objectives]  The effects of transgenic cry1C rice (T1C-19) on the development of the yellow mealworm were assessed to provide useful information for the commercial cultivation of Bt rice. [Methods]  Larvae of the yellow mealworm were randomly assigned to be fed with 100% T1C-19, 100% MH63, 62% T1C-19, 62% MH63 rice grain, or a normal diet, until they pupated and their body weight, survival rate, larval stage duration, pupation rate and eclosion rate were measured and analyzed. [Results]  The body weights of the 62% T1C-19, 62% MH63 rice grain group and the normal diet group were almost significantly higher than those of 100% T1C-19 rice and 100% MH63 rice group, and there were no statistically significant differences between the T1C-19 group and MH63 group. Moreover, there were no significant differences in survival rate, duration of larval stage, pupation rate and eclosion rate among the above five different treatments. [Conclusion] Transgenic cry1C rice has no obvious adverse effects on the development of the yellow mealworm and can therefore be used as a feed for this species.