Abstract: 【Objective】Changes of seeding height, ground diameter, biomass, leaf area and chlorophyll content in different proportions of fertilizers were investigated to find out the optimum fertilization scheme. 【Method】Through orthogonal experimental design, experiments of N, P, K fertilization were carried out in container seedlings of Zenia insignis.【Result and conclusion】Fertilization could promote the growth of seedlings and different nutrient elements, and their ratios had a different influence on the growth of seedlings. The treatment of N₄P₄K₂ and N₃P₄K₃ played a greater role in promoting the growth of seedling height and ground diameter. Compared with the control group, it increased by 251.99% and 214.75%, respectively. Total biomass reached the maximum in the treatment of N₂P₄K₁, increasing 298.03% compared with the control group. N is the biggest influence on the growth of Z. insignis seedling, followed by P. Reasonable ratio of N and P, which can effectively improve the quality of Z. insignis seedlings.