Every step of loquat flowering and fruit setting should be done well, and the tree potential is also very important. Fruit trees are weak, unable to supply nutrients, and their relative flowering will decrease. Too strong relative tree potential will also inhibit flowering and fruit setting and control the use of nitrogen fertilizer. At the same time, it is necessary to do a good job of promoting flowers in advance before coming to flowers, pay attention to the supplement of zinc and boron, promote flower bud differentiation, help to come to flowers, and supplement zinc and boron with foliar spray to promote flowering and strengthen flowers. Pay attention to the supplement of phosphorus, potassium and calcium, improve the fruit setting rate, and add red fruit power+hiding power by lightly spraying leaves to promote the development of young fruits. At the same time, micro-irrigation in spring shoot fruit-keeping period can supplement root calcium and energy, promote root growth, balance tree nutrients and improve flowering and fruit-setting rate.