The construction of expressway and high-speed rail is at the sacrifice of the soil ecological environment. It brings about much damaged land and bare slope. It is necessary to restore vegetation and rebuild landscape. In the design of target plant community and configuration plants, it is required to select as far as possible plants that can blossom and bear fruit or pods. Then seeds of these plants can be harvested, processed and sold, and applied for other projects, so as to develop into a complete forest and grass seed industry chain. This not only reasonably utilizes land resources, but also provides a new approach to the problem of insufficient fine forest seed sources in China. This paper discussed the use of land resources in road side slope and forest and grass seed selection and breeding technology, and elaborated the industrialized development paths for forest and grass seed industries in road side slope. Finally, it arrived at following recommendations. (i) The construction of forest and grass industry economic belt using land resources in road side slope can realize maximum land value. Building a road can help people there get rich, and the type of land and water cultivates its type of forest and grass. (ii) It can make up for the losses incurred from construction of expressway and high-speed rail or destroying forest land, and it can increase farmers’ income. (iii) It can increase the supply of domestic seeds, reduce seed import, save foreign exchange, and partly solve the problem of insufficient supply of forest and grass seeds. (iv) It is able to form a complete forest and grass seed industry economic cycle chain, increase employment, and provide new approaches for enriching and benefiting farmers.