The invention relates to a landscape formation method of an all-season-fragrant plant community hierarchical structure, belonging to the technical field of garden engineering. The plant community combination established by the method is formed by compositely planting various fragrance-releasing arbors, shrubs and herbaceous plants in different layers. Michelia alba, Cinnamomum camphora, Ginkgo biloba, Cedrus deodara, Pittosporum tobira, Gardenia jasminoides, Osmanthus fragrans, Chimonanthus praecox and many other plants capable of giving out the respective fragrance in different seasons are adopted, and are reasonably matched and planted in the landscape green central parting region according to the fragrance release seasons and months, positions, terrains, fragrance release thickness, air humidity, hue of floral leaves and the like, thereby providing a large-area all-season-fragrant environment for local tourists, residents, patients and the like, and benefiting the recovery and life prolonging. The formation method takes the seasonal aspect changes of plants into consideration, enriches the landscape configuration of all seasons, creates an all-season-fragrant garden environment, ensures the continuity of fragrant landscape, and has the functions of cleaning air, repelling mosquitoes, preventing worms, relieving the pressure, inhibiting the pathogenic bacteria and the like.