1. Background and Purpose 1 intented to be helpful to treat diabetes through a clinical study of lndongdeungjikolpitang effect of soyangm 2. Methods I studied 6 patients with middle diabetes who were diagnosed by Soyangin at department of Sasang constitutional Medicine in Dongeui Oriental Hospital during 1 year from August. 2001 to July. 2002. and then I investigated the clinical symptoms of the diabetics and analyzed level of examination after administration of lndongdeungjikolpitang 3. Results and Conclusion lndongdeungjikolpitang was administered to six diabetic patients, So-yang-in for 8 weeks. The symptoms such as frequent hunger(P<0.05), decrease of body weight(P<0.05) have improved after the treatment. As results, level of HbAlC(P<0.05), total protein(P<0.05) and blood pressure(P<0.05) significantly decreased after administration of Indongdeungjikolpitang.