The sound of running water promotes urination, caused by the ability of the sound of running water to elicit a bladder contraction response. Conditioned reflexes are an advanced neural activity that develops gradually over the course of a person’s life after birth. Since the human body will have the sound of water every time it urinates, the conditioned reflex that may be formed after a long period of time may occur, so the sound of running water to promote urination will occur. The human auditory sense receives the signal of the sound of running water, which is transmitted along the nerves to the central nervous system. Then, with the involvement of the cerebral cortex, the nerve impulses are transmitted to the bladder, which causes the bladder sphincter to dilate, leading to the emergence of the urinary reflex. If difficulty in urination occurs, it is recommended to actively seek medical attention and treatment under the guidance of a medical professional to avoid aggravation of the condition.