When you drink water, you will experience urinary urgency and frequency, which usually indicates an increased sensitivity of the bladder, which may be seen in several diseases: first, most commonly in acute cystitis, when the bladder triangle, because of the presence of infectious agents, and infectious inflammation, the surface of the mucosal vessels will be congested, and sensitivity will increase, so drinking water will easily cause an increase in urine, thus stimulating the bladder triangle to cause frequent and urgent urination. This can lead to frequent and urgent urination. Secondly, this condition can also be seen in certain rare diseases such as tuberculous cystitis, adenocystitis, and interstitial cystitis. Tuberculous cystitis causes bladder contracture and a reduction in bladder capacity, so a slight increase in urine volume in the bladder causes a significant urge to urinate, resulting in frequent and urgent urination without significant painful urination. In contrast, glandular cystitis and interstitial cystitis, which mainly rely on biopsy for clarification, are not clear in their etiology and may be related to immune and other factors, and their symptoms are also mainly manifested as frequent and urgent urination.