Abstract: In this study, the activity of Canis lupus was monitored with trap technique of infrared camera in the Qiaomuxibai released area of Equus przewalskii in the Karamori Mountain Ungulate Nature Reserve in Xinjiang, China. It was found that the daily activity difference index (α) and diurnal activity index (β) of [WTBX]C. lupus[WTBZ] were quite different from different months (α: t=8.009, df=7, P<0.01; β: t=13.526, df=7, P<0.01, and β=0.45<13/24), which revealed that C. lupus is a species of nocturnal animal in the study area. The seasonal activity patterns of C. lupus during the period from 2011 to 2013 were obviously different (2011: χ2=13.087, [JP2]df=2, P=0.041 1; 2012: χ2=12.452, df=2, P=0.023 4; and 2013: χ2=18.998, df=2, P=0.032 6).[JP] It could be conclude that there were the differences in seasonal and annual activities of C. lupus in the study area.