The invention discloses a 
traditional Chinese medicine composition for treating diabetes. The composition is formed by compounding three Chinese herbal medicines A, B and C. A formula of the Chinese herbal 
medicine A is prepared from the following raw materials in parts by 
mass: 20-30 parts of 
radix bupleuri, 30-40 parts of radix astragali, 25-35 parts of 
cassia twig, 30-40 parts of radix scrophulariae, 25-35 parts of rhizoma cyperi, 20-25 parts of radix paeoniae alba, 10-15 parts of radix salviae miltiorrhizae, 25 parts of poria cocos, 30-35 parts of radix rehmanniae, 20-30 parts of radix puerariae, 10-20 parts of dried orange peel and 20-25 parts of tree peony 
bark; a formula of the Chinese herbal 
medicine B is prepared from the following raw materials in parts by 
mass: 40-50 parts of 
rhizoma coptidis, 30-40 parts of dried ginger, 40-45 parts of 
bombyx batryticatus, 45-50 parts of common yam rhizomes, 40-50 parts of hairyvein agrimony, 45-50 parts of 
potentilla discolor, 40-45 partsof fructus lycii and 35-45 parts of 
radix trichosanthis; and a formula of the class C Chinese herbal 
medicine is prepared from the following raw materials in parts by 
mass: 40-50 parts of radix rehmanniae, 40-50 parts of dark plums, 30-50 parts of raw hawthorn fruits, and 35-45 parts of 
uncaria rhynchophylla. The raw materials are reasonably matched, the manufacturing process is simple and convenient, and the method is easy to implement. The composition has the effects of tonifying 
spleen and qi, nourishing yin and 
quenching thirst, harmonizing 
stomach and stopping hunger while reducing bloodsugar and treating 
diabetes mellitus.