[Objective] The objective of this study is to explore the ways for reducing the leaching loss of speciel fertilizer for rubber tree in order to provide reference for increasing the efficiency of speciel fertilizer for rubber tree utilization. [Methods] An intermittent soil column leaching experiment was conducted by adding water-retaining agent to speciel fertilizer for rubber tree, and the rainfall in the third fertilizer application-period(September) in each year was simulated. Three water-retaining agents including carboxyl methyl cellulose(CMC), polyacrylamide(PAM) and sodium polyacrylate(PAA) were selected. The effects of water-retaining agents on releasing characteristics and leaching losses of nitrogen and potassium from speciel fertilizers for rubber trees were explored to choose the proper application ratio of water-retaining agent and speciel fertilizer for rubber tree. [Results] All the 3 water-retaining agents showed inhibiting effects on leaching losses of nitrogen and potassium from speciel fertilizer for rubber tree. PAM had the best inhibiting effect at a dosage of 6%, and the relative for nitrogen and potassium losses in the first leaching was 44.73% and 57.16%, respectively. Compared to the control treatment, accumulated leaching losses of nitrogen and potassium was decreased by 20.20% and 14.87%, respectively. [Conclusion] Leaching losses of nitrogen and potassium from speciel fertilizer for rubber tree can be reduced by adding water-retaining agent to specific rubber fertilizer.