The efficacy of Shu Yu Tong Capsules is to clear heat and detoxify (to remove heat and toxicity in the body), diuretic and diaphoretic (to improve the problem of dribbling of urine, small amount of urine not passable), and soften and dissipate knots (to soften and dissipate the hard lumps). It is used for the treatment of retention of urine due to the accumulation of dampness and heat in the body (the accumulation of dampness and heat evils in the body), low volume of urine, heat and redness, and so on. Shu Yu Tong Capsule is composed of Chuan Mu Tong, Hook Teng, Wild Chrysanthemum and Qian Cao. It can treat the retention of urine due to the accumulation of dampness and heat, which is characterized by low urine output, dripping or even trickling, abdominal distension, dry mouth, red tongue, yellowish greasy moss, and slippery pulse; and prostate hyperplasia with the above symptoms. It should be noted that, avoid eating sour, cold and spicy food during the medication. If mild diarrhea occurs during the medication, reduce the dosage appropriately to return to normal; pregnant women should be cautious. It is necessary to use the drug under the guidance of a doctor to avoid adverse reactions.