Soil erosion is very serious in the Xiaojiang River Basin.In order to study on mechanism of dry red soil erosion and approach of soil improved

we conducted the field experiments of soil erosion in different land-used types by artificial rainfall and measured changing of soil moisture by TRASE 6050X1 TDR.The results indicated that: The capacities of control water and soil loss in shrub by land were better than in slope farming land

and in slope farming land better than in bare slope land.The capacities of absorbed and transported water were various in different soil layers.The characteristic of surface runoff can be divided into 3 stages in 0.61 mm/minute of rainfall intensity: (1) infiltration-excess runoff is the main form in surface runoff;(2)both the infiltration-excess runoff and saturated runoff caused at the same time in surface runoff;(3) saturated runoff is the main form in surface runoff.