The eastern part of the Yushan National Park abounds in wildlife, including Formosan black bear (Ursus thibetanus) and all the four Artiodactyla species (Muntiacus reevesi, Cervus unicolor, Naemorhedus swinhoei, Sus scrofa) native to Taiwan. The Formosan black bear is the symbolic species of the park as well as an endangered species in Taiwan. Its population status deserves special attention. The herbivores may serve as food base for top predators of the ecosystem. However, facing a decrease in predation pressure or fluctuation in food resources, they may compete with each other or exert grazing or browsing pressure on vegetation. This study is an extension of the previous monitoring program started since 2003. The distribution and relative abundance of the four Artiodactyla species and Taiwan macaque (Macaca cyclopis) were surveyed by sign count and infrared-triggered camera in the area from Nan’an to T’a-fen. All the signs and tracks of black bear detected during the survey was noted. The data collected since 2003 were combined to examine the temporal trends in the status of the target species. Muntjacs and Taiwan macaques were wide spread in the study area, but were less recorded in the inner-most section of the survey route where samber deers were abound. When compared with the records of previous, the frequencies of the recorded signs and tracks of wild boars and Taiwan macaques were increasing this year. The rates of occurrence of the focal species by automatic cameras were lower in this year than ever. Feces and other signs of black bears were recorded 22 times and photos were taken four times. All the records were found in the inner-most two sections of the survey route. Photos taken during the three years were re-examined for the body condition of wildlife. Few individuals were found to be weak and slim, and none were re-sighted among the photos.