Firstly, the prostatitis causes and the symptoms are complicated, most of Chinese medicines only have one kind of formula which may be effective for the slight disease conditionton,but not enough for  the serious disease with complicated symptoms, so the effect isn't perfect.

Secondly, the prostate is wrapped with hard outward pellicle which is difficult for the drugs to penetrate through, so most of Chinese medicines avoid this treatment. They take a special medicine agent which can be led into the channels and collaterals  in the bladder, kidney and prostate.Without the medicine agent,Chinese medicines will have no any effect on the prostatitis treatment too.

Thirdly, the most important is the treatment method. The main cause of the prostate diseases is lower burner damp-heat.The disease can be cured through clearing the damp-heat  toxin to tonify the kidney. However most of Chinese medicines emphasize on the kidney supplements without the complete clearing of the damp-heat toxin, which cann't cure the diseases but make aggravate the disease condtion, especially for the patients suffering from impotence or premature ejaculation.

Different formulas function differently . So it's not reasonalble to regard that all Chinese medicines can cure  prostate diseases.