The possible causes of urination: First, drinking too much water or taking some diuretic drugs, or because of the disease condition and lead to intravenous infusion, too much rehydration, so that the urine discharge increases, or the frequency of urination increases, etc.. Second, if the patient has diabetes, the increase of sugar in the urine can produce the effect of osmotic diuresis and frequent urination, which can be accompanied by increased drinking, increased eating, or weight loss and wasting, etc. It is necessary to conduct urine sugar test and blood sugar test to confirm the diagnosis. Third, if there is a urinary tract infection, there can be frequent urination, accompanied by symptoms of urinary urgency, painful urination, need to carry out routine urine examination to further confirm the diagnosis of infection. Fourth, if there are some irritating factors in the urinary tract, such as stones or tumors, polyps and other lesions in the urinary system, it can produce symptoms of frequent urination, accompanied by pain or bleeding during urination, or symptoms such as back pain and fever, which require ultrasound and CT examination of the urinary system to confirm the diagnosis.