In recent years, the construction of urban forest parks has run into the fast lane in China. As an indispensable natural landscape resource for urban forest parks, forest landscape has been paid increasing attentions by the public, in contrast, less effort has been made in the field of aesthetic evaluation of forest landscape. Based on the theories of landscape esthetics and psychology, this paper aims to present methods for the aesthetic evaluation, and understand citizen’s aesthetic perceptions of forest landscape using Semantic Differential (SD) and Principal Component Analysis (PCA) methods. Moreover, further suggestions will be put forward for a better development of the forest landscape, thereby giving full play to their landscape and recreation functions. As per the findings of this paper, the vegetation element diversity (PC 1 ), the magnificent feel (PC 2 ), the nature-pastoral feel (PC 3 ) and the sense of space (PC 4 ) present the critical comprehensive indexes affecting the aesthetic values of the forest landscape. The relationship between the comprehensive indexes and the landscape aesthetic value is revealed by multiple regression analyses. PC 3 and PC 4 are found to be less influencing on aesthetic values than PC 1 and PC 2 . At last, three suggestions for the construction and protection of forest landscape are put forward. The results of this study will contribute to the preservation of the forest landscape aesthetic, and the integration of these conclusions into the sustainable development strategies of urban forest parks.