Abstract:The accuracy of five corn chilling damage indices (temperature anomaly index, accumulated temperature index, heat index, safety tasseling period index, comprehensive index) was evaluated in Meihekou, Jilin province in this study, based on long-term observation data of corn ecosystem in Meihekou agrometeorological station, China Meteorological Administration during 1992—2010. The results indicated that the accuracy of corn chilling damage in Meihekou, Jilin province reached about 67% by the comprehensive index of corn chilling damage considering the difference at different growing stages, but much lower accuracy was found from other indices. The main reason is that these corn chilling damage indices are established from specific regions and specific periods, therefore they do not consider the processes and mechanisms of corn chilling damage yet. Thus, this kind of indices should be modified and should take other regions and other study periods into account. Therefore, it is necessary to strengthen researeh on simulation and and mechanisms of corn chilling damage processes, in order to improve the accuracy of corn chilling damage prediction.