To study the relationship between 500 kinds of commonly used Chinese herbal medicine and the classification of their efficacies in Chinese Materia Medica in relation to the common diseases listed in Internal Medicine. Database retrieval frequency of the quantitative statistical method was adopted. First

the 8 980 kinds of Chinese herbal medicine recorded in Chinese Materia Medica were used as the original search objects

and 4 493 kinds which were cited in more than five articles were picked out and then rechecked for further title citations. Second

as judged based on the Criterion

the numbers of articles which included the medicines in the line of standards were examined. As a result

500 species of Chinese herbal medicine were singled out based on their retrieval frequency and were then used for compilation of the classification statistics according to their efficacy and the common diseases in Internal Medicine. From the classification of Chinese medicines

herbs with wide efficiency and a meek nature had higher frequencies

but those which were not appropriate as decoctions had relatively lower frequencies. However

according to the average frequency

the Chinese herbal medicine for nourishing qi and tonifying blood

at 36 346 times and 34 544 times

respectively

were the most commonly used. Analyzed from the frequency of application of the Chinese medicine in the treatment of common diseases

most of the top 10 kinds of Chinese herbal medicine with the highest frequencies generally coincided with the 500 selected medicines. In addition

the Chinese medicines with clear pharmacological efficiency were easily isolated and purified to be made into injections

although other forms are more commonly used. The results of the research objectively reflected the current applications of Chinese herbal medicine

and could be used as references in teaching

research

clinical applications

and in compiling and increasing the drugs in textbooks and Pharmacopoeia.