The invention belongs to the technical field of 
fruit tree fertilizers and relates to a blueberry 
fruit tree dedicated 
fertilizer and a preparation method thereof. The blueberry 
fruit tree dedicated 
fertilizer using rabbit excrement as the main 
raw material is a 
solid organic fertilizer which is prepared from the following raw materials in 
mass percent: 40-60% of rabbit excrement, 30-50% of straws, 3-6% of nitrogenous 
fertilizer, 1.5-2% of phosphatic fertilizer and 1.5-2% of potassic fertilizer. The preparation method for the blueberry fruit tree dedicated fertilizer comprises the following steps: fermenting the mixture of the rabbit excrement and the straws, adding the nitrogenous fertilizer, the phosphatic fertilizer and the potassic fertilizer, culturing liquid 
mycorrhizal fungi, and the like, so that the blueberry fruit tree dedicated fertilizer provided by the invention is prepared. According to the blueberry fruit tree dedicated fertilizer, sulphur is not added, so that the 
soil pH is prevented from being excessively low or excessively high; the 
mycorrhizal fungi is added to promote growth of 
bacilli of the 
blueberry root system; according to the characteristics of the rabbit excrement 
raw material, the straws and other ingredients such as 
ammonium sulfate, monoammonium 
phosphate and 
potassium sulphate are added to ensure uniformity and stability of the product; the preparation method for the blueberry fruit tree dedicated fertilizer has the advantages that the process is simple, the 
raw material is easy to obtain, the rabbit excrement and straws are used as main raw materials, and the cost is low.