Abstract: In order to compare the heat tolerance of 5 Festuca acundinacea cultivars, such as Masterpiece, TF64, Tomcat and so on, color, density, coverage and oversummer rate were determined according to field experiment. The results showed that all these indexes of 5 Festuca acundinacea cultivars were significantly reduced after summer in Nanjing and these indexes of Masterpiece were higher compared with other cultivars, and TF64 next. Therefore, Masterpiece had the strongest heat tolerance and TF64 took second place in these 5 Festuca acundinacea cultivars.