The invention discloses a traditional Chinese medicinal preparation for treating diabetics and a preparation method of the traditional Chinese medicinal preparation. The traditional Chinese medicinal preparation mainly consists of the following medicinal raw materials in parts by weight: 3-32 parts of 
ginseng, 3-36 parts of radix pseudostellariae, 5-40 parts of 
euonymus alatus sieb, 4-40 parts of spica prunellae, 4-64 parts of herba agrimoniae, 2-28 parts of 
rhizoma coptidis, 5-38 parts of cortex moutan, 4-48 parts of rhizoma atractylodis macrocephalae, 5-48 parts of 
radix ophiopogonis and 5-50 parts of radix puerariae. The 
traditional Chinese medicine prescription, on the basis of scientific compatibility and a synergistic effect of the various medicinal components which promote each other, has functions of tonifying qi and nourishing yin, promoting fluid and tonifying 
stomach and 
lung, nourishing 
liver and kidney, tonifying 
spleen and reinforcing 
kidney, inducing 
diuresis and eliminating dampness, clearing away heat and totix materials, promoting 
blood circulation and removing stasis, and boosting 
immunity; the traditional Chinese medicinal preparation can effectively repair damaged 
islet cells, enhance blood 
glucose utilization and transformation capacities of 
human body and comprehensively condition metabolic disorders, so that purposes of stably lowering blood glucose and reducing a recurrence rate are achieved, and yin-yang balance in the body of a patient is kept; and the traditional Chinese medicinal preparation is obvious in 
curative effect, short in treatment cycle and beneficial for thorough 
recovery, so that the diabetics can be fundamentally cured.