Abstract: The effects of different levels of controlled release fertilers on growth and biomass of Cunninghamia lanceolata seedlings were studied by means of the randomized block design.The height and diameter of Cunninghamia lanceolata container seedlings increased with the decreasing trend after fertilization increase; biomass of Cunninghamia lanceolata seedlings increased with increasing trend of fertilizers; root-shoot ratio and the ratio of height to diameter had no obvious regularity.Comprehensively,the slow-release fertilizer was M4,which was the most beneficial to the growth of Cunninghamia lanceolata seedlings.