The experiments for nutrient release of chitosan coated slow release fertilizers (CCF) were carried out to elucidate the effects of soil moisture, temperature, and soil pH, water vapor pressure and ion concentration on nutrient release characteristic of CCF. The results showed that CCF was a good slow\|release fertilizer. The nutrient release rate was linearly related to the water vapor pressure, and it was decreased with the increase of the ion concentration of liquid medium. With the increase of soil moisture, the nutrient release rate was increased Nutrient release rate of CCF was increased with the increasing incubation temperature, and when the temperature enhanced every 10℃, the nutrient release rate would enhance approximately 1.3-1.4 times. However, the cumulative release curves of CCF at the different temperature were of similarity and regularity. The effect of soil’s pH on the nutrient release rate of CCF was not significant.