Abstract: From the viewpoint of forest ecology, this paper gives some research results of a comprehensive study of the relation between the growth-development and enviro ment of the Cunninghamia lanceolata plantation in southwest Hunan during the period 1960 to 1981.The paper falls into the following parts: (1) natural conditions in the forest regions in Huitong, ( 2 ) basic features of the permanent plots and investigation methods, ( 3 ) periodic increment of height and DBH of trees in different forest types at different age stages, ( 4 ) standing crops of tree layer and stand, ( 5 ) microclimate and the growth of Cunninghamia lanceolata, ( 6 ) edaphic conditions and the growth of Cunninghamia lanceolata, ( 7 ) soil microflora and the growth of Cunninghamia lanceolata and ( 8 ) conclusion.