The normal human body is a finely regulated homeostatic system. If the body consumes a large amount of water for a period of time, the body will have chemoreceptors and pressure receptors to sense the excessive water intake, which will produce anti-diuretic hormone in the hypothalamus, thus regulating the kidneys at an early stage. When excessive water intake occurs, the kidneys will produce a large amount of urine discharge at the same time to ensure that the body’s intake and discharge are in a dynamic and balanced process. However, some cases are also seen in patients who usually have an anxious mindset, or often stay up late and sedentary with underlying diseases, such as chronic nephritis and chronic prostatitis, who also tend to excrete too much urine when drinking too much water. In the early stages of chronic nephritis, the number of nighttime urination increases, and even the volume of urination will be greater than during the day. Patients who are found to have abnormalities should first be examined to rule out specific diseases, and then there is no need to worry.