Abstract: [Objective] The fruits and melons produced in Xinjiang enjoy great prestige all over our country.The fruit tree planting area is about one-third of the total arable land in this region.There is more than six hundred thousand hectare faming land which needs to be efficiently utilized in the fruit-bearing forest.Peanut interplanting with the fruit trees is one of the effective ways to make use of the cultivated land.[Method]Data gotten from the test of the peanut variety Huayu 31 planted under walnut trees were analyzed by using statistical software DPS and regularity and tendency of 8 traits expression were analyzed when peanuts had been planted in different spans from the trunk of the walnut trees.[Result]The results of analysis showed that there was difference among the 8 traits when peanuts were planted in different spans and the variable coefficient was 3.16;-47.60; and the variation of the yield per plant was the largest.The bigger of phenotypic values of 5 traits,the larger span from the trunk was,the more significant correlation would be.[Conclusion]With the farther distance from the trunk,phenotypic values of most of the traits will increase accordingly,among which,the increase of the yield per plant was the most obvious.Peanut should be planted in suitable place from trunks under fruit trees and the type of fruit-bearing forest should be chosen carefully and row spacing of fruit trees should be wide enough when peanuts are interplanted with them.