Abstract: Taking SCATC 7-33-97 as the experiment material, the effects of different levels of organic nutrients fertilizer on the contents of N, P, K ,Ca and Mg in rubber budding leaves were studied. The results showed that the contents of N, P, K, Ca in the first and second canopy leaves were significantly higher than those in water treatment at different concentrations of organic nutrients, and reached their maximum at the treatment of A2 and A3. The increase of plant height and stem circle reached significant effect at different concentrations of organic nutrients, and reached their maximum at the treatment of A2. The content of chlorophyll in the leaves significantly increased at different concentrations of organic nutrients. The treatment of A2 was most appropriate from the cost of production and effect. And the effect was better before the second canopy leaves by foliar application.