Abstract: A consecutive 3-year fertilization test of applying medium-element water soluble fertilizer ‘Quanfu’ to newhall navel orange showed that spraying medium-element water soluble fertilization ‘Quanfu’ to newhall navel orange in fruit enlargement period could improve the fruit character, and compared with spraying water as CK, the yield increased by 23.7% reached very significant level and the net income increased by 1677.8 RMByuan/667 m² (25 167 RMByuan/hm²).