Six treatments including 70% reduction in phosphorus combined without zinc fertilizer,70% reduction in phosphorus combined with zinc fertilizer,35% reduction in phosphorus combined without zinc fertilizer,35% reduction in phosphorus combined with zinc fertilizer,the habitual amount of phosphorus combined without zinc fertilizer,the habitual amount of phosphorus combined with zinc fertilizer were set up in the white flesh Guanxi pomelo in Pinghe area to investigate the effects of phosphorus reduction combined with zinc foliar fertilizer on the yield and quality of Guanxi pomelo fruit in Pinghe County. The nitrogen,phosphorus and potash fertilizers were orderly applied at the period of flowering (midMarch),steady fruiting (midMay),filling fruiting (late July or early August) and wintering (late November). Foliar zinc fertilizer sprayed during the period of flowering (midMarch) and filling fruiting (late July or early August). Results showed that reducing the amount of phosphate fertilizer increased fruit yield and improved fruit quality. When phosphate fertilizer is reduced by 35%,the fruit yield is increased significantly,and the weight of single fruit and thick skin is significantly reduced. The content of vitamin C,solidacid ratio and other indicators are increased. 35% reduction in phosphorus combined with zinc fertilizer significantly increased fruit yield,comprehensive quality score,fruit juice rate,water content and vitamin C content. Results of field test showed that phosphate fertilizer can be reduced by 35% in Pinghe Guanxi pomelo orchard. Phosphate fertilizer reduction by 35% combined with zinc fertilizer can significantly increase fruit yield and improve fruit quality. The fertilization rate recommended is phosphate fertilizer (P2O5) 0.85 kg/(plant·a),two sprays of 0.2% zinc fertilizer (ZnSO4·7H2O) 40 g/( plant·a).