Usually, keep wanting to pee after going to the toilet usually refers to frequent urination, which may be caused by drinking more water, diabetes, cystitis and other reasons. 1. Drinking more water: As a result of the large amount of water intake makes the plasma osmotic pressure greatly reduced, the hypothalamic osmotic pressure receptors will feel the osmotic pressure change, so that the release of antidiuretic hormone to reduce the water reabsorption by the kidneys will also be reduced, which will result in this phenomenon. 2. Diabetes: Due to the high sugar content inside the blood, it is easy to produce osmotic diuresis, which leads to an increase in urine production, and this phenomenon will occur. 3. cystitis: due to bacterial inflammatory factors in the bladder to stimulate the bladder mucosa, resulting in bladder mucosa congestion and edema, stimulated by the bladder forced muscle contraction, thus this phenomenon. In addition, frequent urination can also be seen in other diseases, such as prostatitis, prostate hyperplasia, overactive bladder syndrome and so on. It is recommended that patients go to the hospital in time to avoid delay.