Drinking water and wanting to go to the toilet may be caused by neuropsychiatric factors, urinary system diseases, endocrine system diseases and other factors. 1. Neuropsychiatric factors: when nervous, may be due to emotional factors lead to drink water and want to go to the toilet, is a normal physiological phenomenon. 2. Urinary system diseases: such as urinary tract infection, prostate hyperplasia, cystitis, etc. may be due to inflammation stimulation of urinary frequency, urinary urgency and other symptoms, sometimes accompanied by fever, urinary pain. 3. Endocrine system diseases: such as diabetes mellitus can cause osmotic diuresis due to high glucose resulting in excessive urination. It is recommended to go to a regular hospital, improve the relevant examination, standardized treatment under the guidance of the doctor, so as not to delay the condition.