Abstract: The results of the experiments on sand stablization by plantation and afforestation conducted in the Zhanggu tai District, Liaoning province, for 25 years show that after the plantation, physical clay (0.01mm in its grain size) content, water holding capacity and organic matter of the aeolian soil increased, and bulk density and permeability of it decreased. N, P and K contents of semi -fixed aeolian soil are 1.30, 1.09 and 1,04 tims of those of unfixed one respectivel y. The N, P205 and K20 contents of aeolian soil have increased by 1485 kg/ha., 1164 kg/ha, and 2428 kg/ha, respectively as a result of thep lantation of pinus sylvestris var. mogolica Litv, for 25 years. It is concluded in the study that it is an effective method to ameliorate and fertilize aeolian soil and to stablize sands by plantation and afforeatation.