The diurnal activity rhythm and the time budget of dwarf blue sheep were studied with the Scans Instantaneous Sampling and Focal Animal Sampling in the Zhubalong Nature Reserve of Sichuan Province, China, during middle of the November 2008 to middle of the January 2009, and March to August 2009. The results indicated that dwarf blue sheep's activity time occupied 72.24% and inactivity time 27.76%. The activity frequency curve showed the"U"graph. Their behaviors had stronger rhythmcity in whole observation period and the peak of activity and the peak of feeding were coincidence on the whole. The dwarf blue sheep spent 53.83% of their times on feeding 27.76% on bedding 9.93% on standing 8.24% on moving and 0.24% on the other behaviors. There were two apparently feeding peaks in their diurnal activity rhythm: the first peak at 9:00-11:00 and the second peak at 17:00-19:00. Between two feeding peeks there was one bedding peek (at 11:00-16:00). The regularity was feeding bedding feeding. There were four apparently standing peaks in their diurnal activity rhythm: the first peak at 11:00-12:00, the second peak at 13:00-15:00,the third peak at 14:00-15:00 and the fourth peak at 18:00-19:00; The peak of the moving was to follow the peak of the feeding; There were a peak of the others behavior at 17:00-19:00. Study about the rhythm behavior in difference season, there were two apparently feeding peaks and a feeding low tide in spring, summer and winter, the first feeding peak at 9:00-11:00 and the second feeding peak at 17:00-19:00, and the feeding low tide at 11:00-17:00; There were two bedding peaks in spring and winter, one bedding peak in summer; Between the peak of the moving, standing and the peak of the feeding is fairly similar, there were two others behavior peaks in winter, the daybreak-dusk characteristic of others behavior in summer, but the others behavior was seldom in spring. Kruskal-Wallis H tests indicated that the influence of different season on the time of feeding (P < 0.05), bedding (P < 0.05) and others behavior (P < 0.05) was significant, but moving (P > 0.05) and standing (P > 0.05) was not significant. About the time budget between different age, the kids feeding time is the most, then the subadults', and the adults' was the least. Compared to the kid, the subadults spent more time on others behavior, and the adults spent less time on other behavior. Kruskal-Wallis H tests indicated that the influence among different ages on the time of others behavior was significant (P < 0.05), but other four behaviors was not significant (P>0.05). Mann-Whitney U tests indicated that the influence of adult and subadult on moving (P<0.05), bedding (P<0.05) and standing(P<0.05) were significant; and on the others behavior was extremely significant (P<0.01); the influence of adult and kid on the others behavior (P<0.05) was significant, and on the standing (P<0.01) was extremely significant; but the influence of five behaviors between the subadults and the kids were not significant (P>0.05). Compared to the female, the male spent more time on feeding, moving and bedding; and the female spent less time on standing and the others behavior. Mann-Whitney U tests indicated that the sex displayed certain influences on the time budgets and activity of dwarf blue sheep, but the influence was not significant (P > 0.05).