Abstract: To explore the properties of slow-release fertilizer coated by natural wood powder, experiments were conducted including the variable quantity such as temperature, pH and the storage time. Results showed that nutrient accumulation-release curves of coating slow-release fertilizer was "S" type, the nutrient accumulation-release of 28 days was 73.77%, nutrient micro-release ratios was 1.83% and theoretical release time was 50.25 days. The release of nutrients was accelerated by temperature. Releasing of N was promoted by a H+ and OH-. Slow release fertilizer was in the best performance when is placed at room temperature time within 30 days.