The nutrient contents of the soil，leaves，fruits of the‘Newhall’navel orange orchard in Ziguicounty，Hubei province and their relationship with fruit quality were analyzed in order to provide theoretical basis for the scientific andrational fertilization of‘Newhall’navel orange in Ziguicounty.The soil，leaf nutrients and fruit quality of 71‘Newhall’navel orange orchards in Ziguicounty，Hubei province weredetermined，and multiple regression equations were establishedby correlation analysis and regressionanalysis.The results showed that there was a trend of soil acidification and the averagesoil pH value was4.88.The average content of soil organic matter was 21.51g/kg，and the proportion of soil organic matter inthe proper range was as high as98%.The proportion of soil alkali -hydrolyzable nitrogen and available phosphorus below theappropriate level were 55% and34%，respectively，and the proportion of soil available potassium at high and excessive levelwas58%.The leaf nitrogen was low and the proportion at deficiency level was59%，and the proportion of leaf phosphorusat deficiency level was47%.The proportion of proper and excessive potassium in leaves were 55% and38%，respectively.The average soluble solids and pericarp thickness of navel orange were 14.83% and 4.15mm，respectively，100% of whichmet with the requirements of excellent fruit solids and pericarp thickness.The fruit had a relatively high titratable acidcontent，with an average content of1.59%，and the ratio of fruit solid to acid in accordance with the requirements of superior fruit and first-class fruit were 24.5% and38.8%，respectively.There was no significant correlation between soilnitrogen，phosphorus and potassium and fruitnitrogen，phosphorus and potassiumnutrients，but there was a very significant correlation between leaf phosphorus and fruit phosphorus and potassium and a significant correlation between leaf phosphorus and fruitnitrogen.Fruitweight，firmness，fruit shapeindex，red -green fruitsurface，soluble solids and edible rate were significantlycorrelated with fruitnitrogen，phosphorus and potassiumcontents.The cultivation and management of Zigui‘Newhall’navelorange should pay attention to the application of organic fertilizer and the improvement of acidsoil，increase the content of soil alkali-hydrolyzable nitrogen and available phosphorus through multiple applications with reducing amount offertilizers，andreduce the input of potassium fertilizerproperly.According to the fruitnutrients，accurate fertilization management should be realized to reduce fertilizer waste.