This present invention relates to a method for extracting Epimedium herb to prepare flavones and polysaccharides combinations in which their ratios vary from 2:8 to 8:2 by weight and applying these extracted compositions in treatment of prostatic hyperplasia. Total flavones of the extracts are in the range of 20-90% and the molecular weights of extracted polysaccharides vary from 1,000 to 700,000 Daltons. This invention also includes a method for preparing compounded formulations which contain extracts of Radix Ginseng, pollens, Radix Astragali, Cortex Phellodendri, Epimedium flavones and polysaccharides and administering these compositions directed at treatment of prostatic hyperplasia and prostatitis. Clinical study has showed that these extracts and formulations are effective in treatment of prostate illness with no adverse reactions.