Gui'de County is located at northeast of Qinghai-Tibetan Plateau, which has five towns and 100,000 population. The whole area is 3600 sqkm2 and the altitude is more than 2500m. It belongs to plateau continental climate, which characterizes in strong sunshine, dry in winter and spring, cool and wet in summer and autumn. In Gui'de County, the natural environment is beautiful. It's rich in vegetables and fruit. Different ethnic groups live together, including Han people, Tibetan, Hui and Mongolian. Among them, Tibetan population occupies 33.48%.