Clematis acerifolia is a rare and scattered endemic plants in Taihang Mountain, and its living conditions are highly concerned by scholars and local governments. Based on the investigation of typical sample plots of Clematis acerifolia community newly discovered in Huluyu Valley of Yixian County, Hebei Province, this paper quantitatively analyzed the niche breadth, niche overlap and niche similarity of each species, and evaluated the survival safety status of Clematis acerifolia taking the species importance value as the niche measurement index. The results showed that 17 species belonging to 15 genera and 14 families were recorded in the survey plots, and the species composition of the community was simple. Clematis acerifolia had the largest important value in most of the survey plots and occupied a dominant position, while other species were relatively low. Among all species in the community, the niche breadth of Clematis acerifolia was the largest (B_i=6.264), Spiraea dasyantha was the second (B_i=5.144), and other species were smaller, which showed that the adaptability to the environment and the ability to use resources of Clematis acerifolia were stronger than other plants. Among the 136 species pairs composed of all species, 8.09% of which had niche overlap value Q_ik=1, 16.91% of which had niche overlap value 0.5 ≤ Q_ik<1, 75.00% of which had niche overlap value Q_ik<0.5, the degree of niche overlap between species was relatively low. Meanwhile, among the 136 species pairs, 8.09% of which had niche similarity C_ik=1, 5.88% of which had niche similarity 0.5 ≤ C_ik<1, 86.03% of which had niche similarity C_ik<0.5, niche similarity value of most species were at a low level, the degree of niche similarity was also low. For all 16 species pairs composed of Clematis acerifolia and other species, 62.50% of which had low niche overlap (Q_ik<0.5), and 81.25% had low niche similarity (C_ik<0.5), the degree of niche overlap and niche similarity between Clematis acerifolia and other species was relatively low, too. Niche analysis indicated that the competition among species in the community was mild and the community was relatively stable, the living condition of Clematis acerifolia was relatively safe and it could adapt to the special cliff environment of Huluyu Valley. This study shows that niche analysis can be used as a method to evaluate the survival status and safety risk of rare and endangered species.