The characteristics of phosphorus efficiency and some biochemical evaluation criteria were studied using thirty wheat cultivars from Hebei plain as the materials.The results indicated that there were obvious differences in plant dry weight in the tested cultivars under deficient phosphorus(-P) condition.The cultivars could be classified into four types of phosphorus efficiency,including high,relative high,middle and low efficiency.Under-P condition,the plant dry weight and plant accumulative phosphorus amount showed an increase tendency,with the increase of phosphorus efficiency of the cultivars.Meanwhile,the superoxide dismutase(SOD) activity and catalase(CAT) activity were gradually increased,and malonaldehyde(MDA) content was gradually decreased.The correlation analysis and regression analysis indicated that there were most positive,positive and most negative correlations between plant dry weight and SOD activity,CAT activity and MDA content,respectively,so were between plant accumulative phosphorus and SOD activity,CAT activity and MDA content,respectively.Thus,SOD activity and MDA content could be acted as the important criteria for evaluation of phosphorus efficiency under deficient phosphorus condition in wheat.