Abstract: The limestone in sedimentary rocks in Guangxi is well developed, with large reserves, and good quality, and easily mined and fo wide use. So that it has noticeable economic benefits Can be exploited in future. It is one of superior mineral resources in Guangxi. It up to 20 thousand meters in thickness, was mainly formed in the plate developed phase during the Late Palaeozoic. 76 mineral deposits have been prospected. Their reserves are over a few hundred million tons. Karst topography is well developed in Guangxi, because it is situated in the subtropics with high temperature and abundant precipitation.The scenery from Guilin to Yangshou is well-known both abroad and at home. Ther are many caves for tourism, archaeology and exhibition in Guangxi. Income of tourist industry in Guilin City is over a few thousand million dollars（RMB）. Limestone has many uses,e.g.it Can be used in the manufacture of cement, as flux raw material for metallurgy, and raw materials in chemical industry, light industry, construction industry as well as mineral feed additive to livestock and fowl. The annual income is more one hundred million dollars （RMB）.