To study the effects of white clover culture on soil fertility and fruit quality of Cara Cara naval orange (Citrus sinensis Osbeck),soil available mineral elements content of orchard were measured 5 years after sod culture (in 2015).The fruit qualities of Cara Cara naval orange were measured 45 years after sod culture (in 2014 and 2015).The results showed that available P (phosphorus) and Fe (iron) content were significantly up regulated in white clover culture treated soil compared with the control.The white clover culture significantly increased fruit weight,fruit shape index and edible rate compared with the control.Fruit weight in 2014 and 2015 was increased by 15.71% and 28.98%.Fruit peel thickness thinning in 2014 and 2015 was increased by 0.28 mm and 0.18 mm.Fruit shape index was increased by 0.04.Fruit edible rate in 2014 and 2015 was increased by 2.3% and 2.1%.The total soluble content,total acid and vitamin C of fruit were not significantly affected under the white clover culture.The white clover culture increased soil fertility of orchard and improved fruit quality of Cara Cara naval orange.The white clover culture has the potential to be popularized on Cara Cara naval orange orchard.