Objective: To research the treatment regularity of professor Zhang Ya-qiang in the therapy of Chronic Prostatitis(CP). Method: Medical records of 90 CP patients treated by Professor Zhang for 558 consultations were input into database by structuralized medical history template. Systematically analyze the data with the System Software of OLD TCM Clinical Diagnosis and Treatment Information Collection. Results: The treatment principle involving activating blood circulation to dissipate blood stasis, clearing away heat evil and promoting diuresis, invigorating the kidney are comparatively frequently used；Formulations including decoction of four drugs integrated of peach seed & safflower，decoction of dan-shen root，decoction of gentian root for purging liver-heat. Forty-five herbal medicines are comparatively frequently used. The most frequently used medicine sort is activating blood circulation medicine, followed by medicine of clearing away heat evil and promoting diuresis,supplement kidney. Conclusion：Professor Zhang pays more attention to activating blood circulation. Based on removing blood circulation，clearing away heat evil and promoting diuresis and supplementing kidney are also used . At the same time，the mental adjustment should be emphasized.