Located in the transitional area from subtropical zone to warm temperate zone,Xinyang City is endowed with rich plant resources.With the development of modem urban landscape architecture,Xinyang City has had increasing needs on quality ornamental tree species.In view of the badly-needed ornamental tree species of local landscaping,this paper screened 20 ornamental tree species from the previously-investigated ones,then applied Analytical Hierarchy Process(AHP) to establish the evaluation system according to ornamental characteristics of these species(such as flower color),and used this system to evaluate the preliminarily-chosen species,finally selected 7 species that can be widely applied,and 5 species that can be moderately applied. Located in the transitional area from subtropical zone to warm temperate zone, Xinyang City is endowed with rich plant resources .With the development of modem urban landscape architecture, Xinyang City has had increasing needs on quality ornamental tree species. In view of the badly-needed ornamental tree species of local landscaping, this paper screened 20 ornamental tree species from the previously-aware ones, then applied Analytical Hierarchy Process (AHP) to establish the evaluation system according to ornamental characteristics of these species (such as flower color), and used this system to evaluate the preliminarily-chosen species, finally selected 7 species that can be widely applied, and 5 species that can be moderately applied.