| This paper studied the textural composition and the content of mineral element in different classes and ages of plantation on Loess plateau.It can be observed that: ① The grown-up plantation contains more clay and less sand and silt than the under-age plantation,the difference is significant;② In contrast with under-age plantation,Al2O3,Fe2O3,TiO2,MnO2 and K2O in grwon-up plantation increases,SiO2 and CaO decreases;③ The content of mineral element is correlated with soil textural composition. |