Abstract: Selecting suitable species for the Longquan Mountain urban forest park in Chengdu and putting forward cultivation techniques for species on difficult sites can provide scientific basis for landscape configuration and species selection in the vegetation restoration of the Longquan Mountain urban forest park. According to references literature, field investigation and questionnaire survey, 50 plant species were preliminarily determined (including trees, shrubs and herbaceous plants), and 15 indexes were selected from the four aspects of ecological function, landscape function, health care function and economic values to establish the hierarchical model for species selection and evaluation. Subsequently, the selection and evaluation of species in the Longquan Mountain urban forest park were analyzed by Analytic Hierarchy Process (AHP). 13 native species over 5-years-old were selected for cultivation experiment on difficult sites, and the survival rate and conservation rate were investigated. Our results showed that 19 species suitable for planting in the Longquan Mountain urban forest park were selected by AHP. Among them, there were 11 tree species, 6 shrubs species (small trees, vines) and 2 herbs species. There were 8 tree and shrub species suitable for planting on difficult sites, including Robinia pseudoacacia, Ligustrum lucidum, Cinnamomum camphora, Phoebe zhennan, Ginkgo biloba, Koelreuteria paniculata, Pyracantha fortuneana, Photinia serrulata. Our cultivation experiment showed that the conservation rate of 13 natural species after 2 years was more than 91%, among which, the conservation rates of Pyracantha fortuneana, Ligustrum lucidum, Cinnamomum camphora, Robinia pseudoacacia, Cotinus coggygria, Photinia serrulata, Koelreuteria paniculata, Osmanthus fragrans, Celtis sinensis were more than 95%. Considering the site conditions of the Longquan Mountain urban forest park were general poor, in order to improve the survival and conservation rate, large seedlings should be planted, and proper irrigation, tending and fertilization measure should be carried out three years after planting.