Frequent urination may be caused by drinking a lot of water, stress, urinary tract infections and other reasons. 1. Drinking a lot of water: If women drink a lot of water or frequently, it will lead to an increase in body fluids to produce more urine, thus causing frequent urination, which is a normal physiological phenomenon. 2. Mental tension: If a woman’s recent period of time is too much mental tension, stimulate the sympathetic nerve excitation, cause the urethral muscle excitability increases, may cause frequent urination. 3. urinary tract infection: if women do not pay attention to hygiene leads to urinary tract infection, due to inflammation stimulation, will make the bladder mucosa sensitivity increases, may cause frequent urination, accompanied by urinary pain, urinary urgency and other symptoms. Girls frequent urination in the exclusion of physiological causes, should go to the regular hospital in time, clear cause, under the guidance of professional doctors for targeted treatment.