Abstract: 【Objective】 Preparation of jujube based carbon slow release fertilizer with starch as adhesive and its release property analysis. 【Methods】 In this work, jujube charcoal as the carrier, modified starch as the adhesive and urea as the active component and they were employed to prepare jujube charcoal-based slow-release fertilizer by changing the factors, such as the amount of water content, the molding temperature, the molding pressure, the carbon fertilizer ratio and the adding amount of adhesive, and after that the influence of these factors on the compressive and slow-release properties of the slow-release fertilizer were explored. 【Results】 The experimental results showed that when the forming pressure was 7 kN, the water content was 20% and the forming temperature was 60 ^oC, the forming and compressive properties of pure carbon powder were better. Under the same conditions of fertilizer formation, when the ratio of charcoal to urea was 4∶1 and the ratio of adhesive was 4%, the jujube particles had the highest compressive strength. 【Conclusion】 Compared with the traditional slow-release fertilizer, the prepared slow-release fertilizer had better nitrogen accumulation and release rate when the amount of adhesive added was 4%. Compared with pure urea fertilizer, the jujube charcoal-based slow-release fertilizer particles prepared in this work have better compression resistance which can effectively improve its slow-release performance.