According to the results of X2 test , the distributions of N , P , K, Ca , Mg , B content in leaves conformed to the normal distribution , but those of Cu , Fe , Mn , Zn looked rather like X2 distribution. The values of normally distributed characters could be divided into 5 grades by 4 dividing points (standardized probability grading-SPG method) , presented the absence , low value , normal value , high value , excess of standard range of nutritional elements , and the occurrence probability of 1 - 5 grades is 10 % , 20 % , 40 % , 20 % and 10 % respectively. The third grade , which valued from ( X - 0.5246S) to ( X + 0.5246S) , could be the normal value of standard range , rather same to the average value of leaf nutritional elemets in high yield orchards. The values of X2 distributed characters graded by SPG method could be corrected by the average value of leaf nutritional elemelnts in high yield orchards. Therefor , proposed the standard range of apple leaf nutritional elements of Shaanxi province ,compared to the others , the characteristics of N , Ca , Mg , Cu are higher , P , Zn , Fe , K are lower , Mn , B are same to.