Generally, the frequency of urination and low urine volume, which is often referred to as frequent and urgent urination, does not have much to do with the kidneys, but mainly has some relationship with the bladder. The habit of holding urine often causes increased bladder sensitivity, poor elasticity, and small bladder capacity, so a small amount of urine will cause contraction of the detrusor muscle, resulting in symptoms of urination, which means frequent and urgent urination. For overactive bladder syndrome, you can usually take M-blockers to solve the problem.