Abstract: In order to reduce the blindness of the Radix Pseudostellariae(Pseudostellaria heterophylla Pax ex Pax et Hoffm.) growing in the Southeast Guizhou Prefecture of Guizhou Province,the climatic indexes for the suitability of the Radix Pseudostellariae growing were gained,based on the data of the Radix Pseudostellariae growth and development observed in Niudachang town of Shibing County in Guizhou Province.The geographic distribution models of the climatic indexes were designed based on the meteorological data of the sixteen meteorological stations in the Southeast Guizhou Prefecture of Guizhou Province,by using statistical and regression analysis methods for the climatic index,longitude and latitude.The six climatic indexes,which were closely related to the Radix Pseudostellariae growing,were calculated in 204 villages and towns in the Southeast Guizhou Prefecture of Guizhou Province.According to the Climatic and ecological suitability of the Radix Pseudostellariae growing,which was made by choosing the Euclidean distance to realize the optimal fuzzy multi-objectives,the suitable growing areas for the Radix Pseudostellariae growing were divided.The result showed that the mid-west and mid-north parts of the Southeast Guizhou Prefecture were the suitable areas for the Radix Pseudostellariae growing,where the Radix Pseudostellariae could be intensively grown on a large scale.In the mid-east and mid-south parts of the Southeast Guizhou Prefecture,due to the adverse impacts of the high temperature and waterlogging,the Radix Pseudostellariae could not be grown on a large scale.

Key words: Southeast Guizhou Prefecture, Southeast Guizhou Prefecture, Radix Pseudostellariae, Climatic suitability, Geographical distribution model, Euclidean distance