Clinically, diuretic Xiaoyan pill, a Chinese patent medicine, has a remarkable effect on chronic prostatitis. Diuretic Xiaoyan Pill is prepared by Dr. Li Xiaoping, a traditional Chinese medicine, in combination with ancient prescriptions. She believes that diuresis and stranguria should be the main treatment, and pathogenic bacteria should be found according to routine examination of western medicine. Therefore, Dr. Li thinks that both sterilization and anti-inflammatory effects should be taken into account in the treatment, so he has formulated diuretic Xiaoyan pills to treat prostatitis. Peach kernel, cowherb seed, tinea japonici and honeysuckle in the prescription also cause edema and calcification of diuretic Xiaoyan Pill under the stimulation of inflammation. Therefore, patients treated with diuretic Xiaoyan Pill can fundamentally cure prostatitis and eliminate frequent micturition symptoms.