Abstract:To observe the effect of Huangqi capsule on serum thyroid peroxidase antibody (TPOAb) and thyroglobulin antibody (TgAb) in patients with Hashimoto′s thyroiditis.Methods:Sixty patients with Hasimoto′s thyroiditis were randomly divided into treatment group (30 cases) and control group (30 cases).The control group only received a low iodine diet,and the treatment group accept Huangqi capsule on the basis of low iodine.The duration of treatment was 12 weeks.The change of TPOAb,TgAb,serum free triiodothyronine (FT3),free thyroxine(FT4) and thyroid stimulatting hormone (TSH) were observed after treatment.Results:After treatment,the TPOAb and TgAb level were reduced significantly in treatment group (P<0.01),but there is no difference in the control group.There was no significant difference in FT3,FT4 and TSH in both groups before and after treatment (P>0.05).Conclusion:Huangqi capsule can reduce the TPOAb and TgAb levels of HT patients,and improve the thyroid autoimmune reaction with a favorable clinical effect,with no adverse reactions.