Objective：To analyze the literature about the treatment of chronic prostatitis with Chinese medicine，and to study administration characteristics and regularity of prescription concerning the literature.Methods：Database of China National Knowledge Infrastructure(CNKI)from 1977 to 2016 was retrieved to select and arrange the effective literature about the treatment of chronic prostatitis.Two hundred and twelve cases of Chinese medicine formula were eventually extracted to establish a database.IBM SPSS Modeler based on association rules was employed to analyze the frequency and regularity of prescription in 212 cases of Chinese medicinal formula，medicine types and meridian tropism of medicine via Apriori algorithm.Results：The top 5 medications applied in the prescriptions in terms of administration frequency were salvia(80 times，41.9%)，red peony root(78 times，40.8%)，the seed of cowherb(70 times，36.6%)，herba Patriniae(67 times，35.1%)，and plantain seed(66 times，34.6%).The top 5 high frequency medicine types were heat-clearing medicine(515 times，25.28%)，blood-activating and stasis-resolving medicine(511 times，25.09%)，dampness-draining diuretic medicine(357 times，17.53%)，tonifying medicine(301 times，14.78%)，and qi-regulating medicine(130 times，6.38%).The top 3 high frequency meridian tropism of medicine types were liver meridian(1275 times，23.80%)，stomach meridian(704 times，13.14%)and kidney meridian(638 times，11.91%).In terms of association rules，the number of association rules in 3 kinds of medicine who accorded with the minimum support confidence(10%)and 4 kinds of medicine who accorded with support degree(75%)was 13 and 4 respectively.Heat-clearing medicine，dampness-draining diuretic medicine，blood-activating and stasis-resolving medicine and tonifying medicine were commonly used in medicine combination based on the above rules.Conclusion：The treatment of chronic prostatitis puts emphasis on clearing heat and removing dampness as well as activating blood and resolving stasis，along with nourishing kidney and activating meridians as the supplemented treatment.