Abstract: In the research, we studied the ecological adaptability of evergreen conifers in Taiyuan City, and provided references for the selection of greening species. Analytic hierarchy process (AHP) was used to evaluate ecological adaptability of 12 evergreen conifers in Taiyuan, and based on the five evaluation indexes, the judgment matrix and weight value were established by 1-9 scale method. According the comprehensive scores, we conducted adaptability evaluation and cluster analysis, and the tree species were divided into five levels: level Ⅰ (extremely adaptive), level Ⅱ (adaptive), level Ⅲ (not very adaptive), level Ⅳ (not adaptive), level Ⅴ (extremely maladaptive). Five indicators (crown potential, trunk shape, growth potential, branches and leaves situational, pest performance) were chosen in the ecological adaptability evaluation index system of Taiyuan evergreen conifers, and the weight value of every indicator was 0.395, 0.068, 0.333, 0.113 and 0.091, respectively. The adaptability evaluation and cluster analysis showed that the 12 evergreen conifers were divided into four grades as: levelⅠ-Sabina chinensis, Platycladus orientalis, Pinus bungeana; level Ⅱ-Picea meyeri, Picea wilsonii, Juniperus rigida; level Ⅲ-Pinus sylvestris, Pinus armandii, Pinus tabuliformis; level Ⅳ- Cedrus deodara, Abies holophylla, Taxus chinensis.