Not drinking much water but urinating a lot may be related to mental factors, chronic interstitial nephritis, diabetic nephropathy and other reasons. 1. Psychological factors: If you are nervous and anxious because of your life and work, it may affect the central nervous system and reduce the secretion of antidiuretic hormone, which leads to the production of large amounts of primary urine, and then you will have to urinate a lot without drinking much water. 2. Chronic interstitial nephritis: If you suffer from chronic interstitial nephritis, it may cause tubular reabsorption disorder, resulting in an increase in urine production, and therefore, you don’t drink much water and urinate a lot. 3. Diabetic nephropathy: If you suffer from diabetic nephropathy, it may lead to kidney damage, causing kidney concentration function to decrease, resulting in too much water into urine and the above situation. Therefore, if you don’t drink much water and urinate a lot, you also need to pay attention to whether there are other uncomfortable symptoms, if you have not been relieved or other uncomfortable symptoms, you should consult a doctor in time to find out the cause, and under the guidance of the doctor to carry out treatment.