In order to evaluate the application effect of a new type of large particle compound fertilizer in simplified fertilization of fruit trees，the large particle compound fertilizer was used as the research material，and the nutrient release effects of different types of fertilizers in the soil were explored through soil column leaching tests in Dandong，Liaoning province. Meanwhile，the effects of different application amounts of the new type of large particle compound fertilizer on the yield of Yanhong peaches were compared，and the optimal amount of fertilizer application was clarified from the perspective of reducing fertilizer loss and promoting sustainable development of the environment，providing a scientific basis for the simplified fertilization of fruit trees. The results of the experiment showed that different types of fertilizers had a significant impact on the leaching loss of nitrogen，phosphorus，and potassium in the leaching test. The leaching concentration of available phosphorus in the treatment with the new type of large particle compound fertilizer (T1)was 25 times that of the conventional surface-applied fertilizer treatment (T4)，0.3 times that of the conventional fertilizer treatment (T3)，and 0.87 times that of the powder treatment (T2). The available phosphorus concentration of T1 treatment was improved to a certain extent. When the leaching concentration of T1 was the highest，the total leaching amount of inorganic nitrogen in this treatment was lower than that of T2 treatment by 27.3% and the T3 treatment by 16.5%. The leaching amount of available potassium was lower than that of the T2，T4 and T3 treatments by 30.6%，18.2% and 16.1%，respectively. The T1 treatment could significantly reduce the leaching loss of nitrogen，phosphorus and potassium. The experimental results of simplified fertilization of Yanhong peaches in Dandong showed that compared with the conventional fertilizers，the application of the new type of large particle compound fertilizer increased the average yield of peach by 11.6%，and the actual amount of fertilizer used was reduced by an average of 66% compared to the ordinary compound fertilizers. The productivity of simplified fertilization treatment was significantly higher than that of conventional fertilization treatment. The use of new type of large particle fertilizers had slowed down nutrient leaching，significantly improved crop yields，and provided a scientific and efficient fertilizer solution for modern fruit tree production.