Abstract: "Grass-Slope" is a secondary vegetation widely distributed Guangdong Province, China.As for the utilization and reconstruction of grass-slope, first of all we must restore it into forest vegetation.It is rather easy to reconstruct the grass-slope into Masson’s pine forest, not only because there are Masson’s pines sparsely lived but also because the tendency of plant succession. In addition, we may try to plant bamboo (Phyllostachys edulis) and Cunninghamia lanceolata.The utilization and reconstruction of grass-slope is significant to develop agricultural economy of mountainous regions. It is important to make regional planning. Also, we must pay attention to introduce the best forage crops for the development of domestic animals. In regions of lower altitude we may plant fruit trees and economic trees as much as possible, for example, Litchi chinensis, Canarium pimela, Castanea mollissima, Diospyros kaki, Camellia oleifera and Aleurites fordii etc.