During the long term production practice, lots of clever methods have been created by the Chinese to prevent soil erosion and solve the water problems in the arid regions. In Yuanyang County , Yunan Province , precipitation is abundant, so water resource is rich on the mountains no matter how high they are. By making full use of this natural advantage, the Hani people make terraced paddy fields on the slopes with the degree of over 25 at the altitude of 144-2000 m. In Guilin City , Guangxi Zhuang Autonomous Region, the moon shaped fields of the Longji Zhuang nationality and Jinkeng Yao nationality are both mountain terraces built in the Yuan dynasty and used in the Qing dynasty. In Bijie City , Guizhou Province, there is a village called Nongla through which the Guanyin River flows. In the village, the forest coverage reaches 72% by means of forest conservation and “ slope made into terrace ” . In the northeastern plain, it has been proposed by some experts that “ level terrace ” is the ultimate measure to preserve this piece of black earth and prevent soil erosion and the measure should be taken as soon as possible. In the arid regions in the west, mini water conservancy projects are playing a key role. People make full use of small cisterns and dubs. In Gansu Province , there are 2.53 million cisterns of various kinds, which can meet the need of drinking water for 2.52 million people and irrigation for 4.57 million mu land. In Xinjiang, a chain of wells are dug all the way from the hillsides to the fields and the bottoms of the wells are then connected to form a blind ditch, which is called “ Kariz ” . The water melted from snow on the mountains and underground water is introduced to the Kariz for irrigation purposes. All the above mentioned measures are meaningful in solving the water problems in the arid regions.