Abstract: For 3 years in a row,a study was carried out by planting soy beans,cabbage,potatoes in young forest land of Zanthoxylum armatum ‘Pengxiqing’ in order to increase soil fertility,water utilization and the growth of young trees.The result showed that (1) the moisture content of 0~40 cm soil was increased by 2.48 g·kg^-1 in dry seasons, where Soy beans were planted.The moisture content of 0~40 cm soil were increased by 2.07 g·kg^-1 where potatoes were planted,and the moisture content of 0~40 cm soil was increased by 1.52 g·kg^-1 where cabbages were planted.(2) The soil organic matter was increased by 21.39 mg·kg^-1~22.78 mg·kg^-1,the soil active nitrogen was increased by 100.02 mg·kg^-1~110.77 mg·kg^-1,the soil active phosphorus was increased by 11.29 mg·kg^-1~11.46 mg·kg^-1,and the soil effective potassium was increased by 61.4 mg·kg^-1~63.6 mg·kg^-1,as compared with the control group.(3) Planting soybeans,potatoes,and cabbages had a significant effect on the tree height and ground diameter of Z.armatum ‘Pengxiqing’.In particular,the young trees planted with soybeans grew the best,and the height and diameter growth were 1.31 times and 1.85 times of the control group respectively.