Most people urinate a lot when they drink water is related to kidney regulation, which is a normal phenomenon. Some people need to be alert to urethritis, cystitis, pyelonephritis and other diseases. 1. Normal phenomenon: usually people drink water to urinate more is a normal phenomenon, mainly with the increase in water intake, kidney regulation ability to improve, so there will be more urine phenomenon. In addition to drinking water, eating watermelon, drinking beer, drinking strong tea, etc. can also cause urinary phenomenon. 2. Urethritis: the disease is related to gonococcus, chlamydia trachomatis, mycoplasma infection. Typical symptoms of patients are urethral itching, frequent urination, painful urination, increased urethral secretion, etc., can also be manifested as drinking water to urinate more. 3. Cystitis: cystitis is mainly associated with bacterial infection, while stones, drugs, etc. can induce the disease. Cystitis can cause some patients to urinate more when they drink water, and it is also easy to be accompanied by urinary urgency, urinary pain, lower abdominal pain, burning sensation in the urethra, and so on. 4. Pyelonephritis: the disease can also cause some patients to drink water to urinate more. Pyelonephritis is related to bacterial infection, urinary tract obstruction and other factors, the common symptoms of patients have fever, urinary urgency, urinary pain, nausea and vomiting, abdominal pain and so on. There are also many pathologic causes of excessive urination on drinking water, such as urethral syndrome and chronic glomerulonephritis. If accompanied by other uncomfortable symptoms, it is recommended to consult a doctor in time.