Abstract: Aiming at the main problems in protected horticulture development in South China，and selecting meteorological factors that play an important role on protected horticulture production，the climatic regionalization in protected horticulture of South China has been made by adopting the methods of principal component analysis and cluster analysis．The South China is divided into 5 climatic districts．Current situation and prospect of protected horticulture development in different districts are analyzed and some suggestions are given from the pointview of climatology．