The invention discloses a formula of jujube special-purpose mixed fertilizer prepared by matching of calcium-magnesia-phosphate fertilizer and fertilizer sources such as single superphosphate particles and urea. The jujube special-purpose mixed fertilizer solves the problem that most mixed fertilizer produced by most mixed fertilizer production enterprises in China produces deliquescence and caking phenomenon. Aiming at solving the above problem, the invention provides the jujube special-purpose mixed fertilizer prepared from calcium-magnesia-phosphate fertilizer and fertilizer sources such as single superphosphate particles and urea and the jujube special-purpose mixed fertilizer has good physical properties. Calcium-magnesia-phosphate powder is mixed with fertilizer sources such as single superphosphate particles and urea so that a calcium-magnesium-phosphate thin film is formed on the surface of the particle and thus deliquescence of single superphosphate and urea because of direct contact is prevented. After being used in soil, the jujube special-purpose mixed fertilizer has effects of reducing phosphorus immobilization and slowly releasing nitrogen so that nitrogen agronomic efficiency is improved. The calcium-magnesium-phosphate fertilizer contains 12-20% of P2O5, 8-15% of MgO, 25-32% of CaO, 20-30% of SiO2, 0.5-1.5% of FeO, 0.1-0.3% of MnO and a small amount of microelements such as B, Zn, Cu, Mo and Ni necessary for crop growth, and MgO, CaO, SiO2, FeO and MnO have high effectiveness for crops. The calcium-magnesia-phosphate fertilizer is ideal multi-element compound fertilizer and the mixing fertilizer prepared from the calcium-magnesia-phosphate fertilizer is multi-element compound fertilizer. Medium and trace elements in the calcium-magnesia phosphate fertilizer have no cost and thus the jujube special-purpose mixed fertilizer is very cheap. The jujube special-purpose mixed fertilizer is obtained by dry-mixing and can be prepared by simple processes. A cost of each ton of the jujube special-purpose mixed fertilizer is reduced by more than 100 yuan. According to a jujube fertilization requirement rule and Chinese northern soil characteristics of rich potassium, partial alkali, lacking phosphorus and less nitrogen, the jujube special-purpose mixed fertilizer is prepared. A preparation method of the jujube special-purpose mixed fertilizer comprises matching 0.9-1.1 parts of high-quality calcium-magnesia phosphate fertilizer powder with 4.4-4.6 parts of urea, 2.4-2.6 parts of single superphosphate particles and 1.9-2.1 parts of potassium chloride, carrying out dry-mixing stirring and carrying out split charging by bags. The jujube special-purpose mixed fertilizer can be marketed and be used for production. The jujube special-purpose mixed fertilizer contains 38% of the total nitrogen, phosphorus and potassium nutrients and has a nitrogen-phosphorus-potassium ratio of 20: 6: 12. The jujube special-purpose mixed fertilizer has strong pertinence. A yield of per mu farmland applied with a bag of the jujube special-purpose mixed fertilizer is higher than that of per mu farmland applied with 3-5 bags of urea.