Abstract: In order to clarify the application effect of foliar fertilizer on Citrus reticulata Blanco, Citrus reticulata Blanco was used as the experimental material. Four different kinds of foliar fertilizers, including the water-soluble fertilizer containing amino-acids (treatment A), polypeptide fish protein (treatment B), organic selenium-rich fertilizer (treatment C) and potassium dihydrogen phosphate (treatment D), were sprayed on Citrus reticulata Blanco, and water (CK) was used as the control group. Then, the effects of different foliar fertilizers on the growth and fruit quality of Citrus reticulata Blanco were studied. The results showed that after spraying the four kinds of foliar fertilizers, there was no significant difference on the internode length of autumnal shoots, leaf length and leaf width of Citrus reticulata Blanco, but the stem diameter of autumn shoots at the base was significantly increased. By measuring the fruit quality, it was found that different foliar fertilizers had different effects on the fruit quality of Citrus reticulata Blanco. Compared with the control group, Treatment A could significantly increase the contents of vitamin C, reducing sugar and total sugar in Citrus reticulata Blanco fruit, and reduce the contents of crude fiber and protein. Treatment B significantly increased the contents of total sugar, protein and crude fiber, and decreased the contents of vitamin C, reducing sugar and total acid in Citrus reticulata Blanco fruit. Treatment C significantly increased the contents of reducing sugar, crude fiber, total sugar, protein and total acid, and decreased the content of vitamin C. Treatment D significantly increased the contents of crude fiber, protein and total acid, and decreased the contents of soluble solids, vitamin C and reducing sugar. Based on the comprehensive effects on the growth and fruit quality of Fuju, Treatment A was the best. The results provided the preliminary theoretical basis for the selection of foliar fertilizer in Citrus reticulata Blanco production.