Taking 1-year-old Camptotheca acuminata Decne in bed seedlings as test material，the effect of stump height and density on leaf biomass of Camptotheca acuminata Decne were studied.The results showed that different cutting heights，densities and combinations of height and density had a significantly effect on leaf biomass of seedlings.At a density of 10 stems per line，the order of leaf biomass of germination seedlings in different cutting heights from high to low was 25 cm＞20 cm＞15 cm＞10 cm；in 1 meter wide seedbed，leaf biomass of 10 stems per line was 31.3% higher than 5 stems per line.In different combinations of height and density，the order of leaf biomass of germination seedlings from high to low was 25 cm×10 stems＞20 cm×10 stems＞25 cm×5 stems＞15 cm×10 stems＞20 cm×5 stems＞10 cm×10 stems＞15 cm×5 stems＞10 cm×5 stems,the top four biomass were 178.3%，182.2%，196.4% and 222.4% as much as the lowest respectively.Therefore，10 stems per line and cutting height of 20～25 cm gave the best result.