Abstract:The foraging and vigilance behaviors of Plateau Pika (Ochotona curzoniae) was studied from March to July 2009 in the Nian Valley (29o46′N, 92o19′﹣92o20′E) Rotok Township, Mozhu Gonggar County, Lhasa Prefecture, Tibet Autonomous Region. We captured the Plateau Pike in 16 quadrats and marked each of them using ear marks to identify their gender later, then released them to the field. We made an observation on the behavior of those remarked Pikes, and used Poisson regression to determine if the behavioral frequencies of these sampled Plateau Pikas were affected by vegetation characteristics, as well as by land-use type. The results showed that the forage frequency of females was higher than males (β =﹣0.203, SE = 0.096, P < 0.05), whereas male vigilance frequency was higher than females (β = 0.199, SE = 0.088, P < 0.05). The foraging behavior of Pike showed a descending trend with increasing of dicotyledons plants in the vegetation (β =﹣0.009, SE = 0.004, P < 0.05), whereas the forage frequency of Pike was increased with increasing of monocotyledons plants in the vegetation (β = 0.009, SE = 0.004, P < 0.05). The vigilance behavior of Pika showed an increasing trend at the grazing areas (β = 0.007, SE = 0.003, P < 0.05) and at habitat with densenseness of vegetation (β = 0.023, SE = 0.006, P < 0.001), The forage behavior of Pika was positively increase as the coverness of Carex spp increase, while, the frequency of vigilance behavior of the animal showed a negative correlation with the cover of Carex spp in the vegetation (β =﹣0.018, SE = 0.007, P < 0.05).