Abstract: The contents of soil organic matter, alkali hydrolyzable nitrogen, available phosphorus, available potassium and trace elements in 24 Dongzao jujube orchards in Linyi county were sampled and analyzed, in order to comprehensively understand the soil fertility status and scientifically evaluate the soil environmental quality in Dongzao jujube planting area of Linyi County.The results showed that the content of soil organic matter ranged from 0.29% to 1.10%,and the content of available phosphorus ranged from 1.09 mg·kg^-1 to 17.55 mg·kg^-1,which were very low in most plots.The content of alkali hydrolyzable nitrogen ranged from 21.7 mg·kg^-1 to 260.05 mg·kg^-1,of which 62.5% was above medium level.The content of available potassium ranged from 63 mg·kg^-1 to 307 mg·kg^-1,of which 70.83% was above medium level.pH ranged from 8.11 to 8.97,indicating that the soil was alkaline and strongly alkaline.The contents of other trace elements were unbalanced, available iron and manganese were not deficient, exchangeable calcium, exchangeable magnesium and available boron were abundant, but available zinc was very low.Through principal component analysis and cluster analysis, the 24 sampling plots were divided into three fertility grades.The number of first-class fertility plots accounted for 37.5%,the second-class fertility plots accounted for 8.3%,and the third-class fertility plots accounted for 54.2%.Using the method of subjective and objective evaluation, the weight of the indicators affecting soil fertility was analyzed.The order of weight was available phosphorus, organic matter, alkali hydrolyzable nitrogen, available potassium, pH, available iron, exchangeable calcium, available boron, available manganese, available zinc and exchangeable magnesium.Therefore, in production, in addition to paying attention to the application of organic matter and a large number of elements, we should also supplement the extremely deficient trace elements according to the abundance and deficiency of soil nutrients, so as to improve the utilization rate of fertilizer, reduce waste, and avoid the decline of soil quality and environmental pollution caused by excessive application of chemical fertilizer or blind supplement of trace element fertilizer