Based on the many year observation on 12 field experimental plots under physical rainfall in Tongcheng county station of soil and water conservation，Hubei province，the influence of different tillage measures on soil and water loss in red soil slope field has been approached using the way of simulated rainfall. It was shown that:1. level tillage is a very good way for control soil and water loss;the amount of soil and water loss under vertical tillage is more bigger than that under level tillage;the differeme in the course of soil and water loss in slope field is not remarkable under normal rainfall or before rainstorm;2. corp rotation on level tillage field could improve physical and chemical properties of soil，and could conserve soil fertility to increase yield;but its influence on soil and water loss is not notable;3. level tillage measure is not only one of the measures for soil and water conservation .but also one that can achieve more benefits on the steep slope field.