Field experiment and chemical analysis methods were used to study the nutrient characteristics and nutrient efficiency of lettuce in 30 different fertility soils at vegetable base of Chongqing.Results showed that nutrient the order of content and uptake by lettuce was phosphorus>nitrogen>potassium in the same yield levels.The change of nitrogen,phosphorus and potassium contents in different yield levels of lettuce were not obvious,and nutrient uptake by lettuce was different at three yields levels.Average amount of nitrogen,phosphorus and potassium uptake by lettuce was 17.9~81.9,2.15~11.3 and 21.4~129 kg·hm2 respectively,and the ratios of nitrogen,phosphorus and potassium uptake was in the range of 1.00∶0.12∶1.20 to1.00∶0.14∶1.58.The 50%）.The nutrients stability was nitrogen>phosphoru.5%).The SCR（soil contribute rate）was 82.3%>59.7%>30.1% from high yield level to low yield level.PE(Physiological efficiency)of nitrogen,phosphorus and potassium in all yields levels showed no regular pattern.