Calcium, magnesium, boron, zinc and other trace elements should be supplemented in time during the budding period of bananas, so as to promote root development, absorb nutrients and provide nutrients for budding and banana finger development. Magnesium supplementation can promote green leaves, improve photosynthesis, reduce yellow leaves and premature aging, and affect banana finger swelling; Supplementing boron and zinc can promote flower bud differentiation, reduce zinc-deficient yellow leaves and reduce banana finger deformity. Before and after budding, micro-root calcium supplementation and micro-punching were applied. If water and fertilizer cannot be applied, apply micro-root calcium and micro-impulse. Top dressing and big fertilizer should be applied together or buried at each time (the distance should be more than 10 cm). Bananas have strong disease resistance, few yellow leaves, strong buds, neat bunches of bananas and good fruit hardness. Spraying micro-nutrition+micro-fruit-nutrition on leaves can reduce yellow leaves and make banana fingers develop well.