Abstract: Taking ‘Yanfu No.3’ with Y-1 interstock as the test material, the mineral elements in different organs and tissues of the shoots and fruits of the tree were determined, and the distribution characteristics of mineral nutrients in different organs and tissues were studied, in order to provide reference for scientific fertilization of apple annual production.The results showed that N,P and Mg had the highest proportion in seeds and the least proportion in fruits.The distribution difference of K content in different organs and tissues was small, and its accumulation in fruit was the highest compared with other elements.Ca element has the highest distribution proportion in leaves.The accumulation of N,P,K and Mg in seeds reached the highest level at 90 days after flowering, and then remained at a high level and changed gently.The distribution of Mg content in peel was significantly higher than that in core and pulp.The content of P,K and Mg in phloem changed more actively, and the distribution of P,K and Mg in phloem increased significantly at 90 days after flowering.Conclusion, fertilization management of dwarf apple on Y-1 interstock should pay attention to basal fertilizer after autumn or topdressing N,P and Mg after anthesis, supplement K fertilizer during fruit expansion period, and supplement Ca fertilizer after anthesis and fruit expansion period.