Abstract: With “grass” as the object and site conditions and germplasm resources as the basis,grass diversification is an ecological restoration strategy guided by the theory of optimal value life community that aims to, in combination with specific functional needs and by virtue of Naturebased Solutions, promote the growth of herbaceous plants, enriches the diversity of herbaceous communities, restores the authenticity of grassland ecosystem, improves the comprehensive ecological benefits of grassland, and finally presents the grassland ecological landscape. Taking grass diversification in Guangyang Island as an example, this research, in view of key problems faced by grasslands across the island, adopts the following three grass diversification measures:ensuring the suitability of both grass and grasslands, weaving grass on slope banks and covering flat dams with grass. Based on this, the research refines an integrated grass diversification method involving the seven steps of “germplasm investigation, site research, style planning, seedling selection, soil improvement, community construction, and grass cultivation”, which has been put into practice and finally restored the authenticity of the grassland in Guangyang Island and the integrity of vegetation structure across the island, while enabling the island to present beautiful ecological landscape.