Abstract:[Objective] This paper aimed to understand the effects of a slow release fertilizer that was mainly made of super water and nutrients absorbent polymer compound on seeding growth, in order to find the suitable polymer compound for seedling growth. [Methods] An experiment with four treatments and one control of potted Honey locust tree experiment was carried out. The seedling growth and its physiological indexes were measured and analyzed. [Results] (1) The nutrient and super absorbent polymer compound significantly improved the ground diameter of seedlings, and also the leaf number, leaf area, the length of new tip shoot and the biomass of seedlings were also increased; (2) The compound significantly improved the leaf water potential which may potentially increase the water use efficiency and the nutrient use efficiency. Both may help to maintain a long period of higher seedling leaf chlorophyll content(SPAD) value. [Conclusion] The nutrient and super absorbent polymer compound can significantly promote seedling growth.