Objective To study TCM physical distribution features of autoimmune hepatitis（AIH）patients to provide guidance for TCM treatment and nursing.Methods 247 patients with AIH were analyzed,and according to gender,age and liver cirrhosis,the distribution of TCM constitution was observed.Results The AIH ratio of the distribution of TCM Constitution was in descending order:yin deficiency（25.1%）and qi stagnation（21.1%）,qi deficiency（15.0%）,balanced constitution（13%）,damp heat（10.5%）,phlegm and damp（8.1 %）,blood stasis（3.2%）and yang deficiency（3.2%）,the intrinsic constitution（0.8%）.Secondly,gender did not affect the distribution of TCM constitution type,but the age and liver cirrhosis could affect the distribution of TCM Constitution types.Conclusion The AIH patients are mainly manifested as the biased constitution,including yin deficiency,qi stagnation and qi deficiency;with the increase of age,the balanced body constitution become less,while yang deficiency and blood stasis gradually will increase;with the progression of the disease,qi stagnation,blood stasis,yin deficiency,yang deficiency constitution gradually increase,while balanced condition,qi deficiency,blood,phlegm dampness,damp heat constitution gradually reduce.