Frequent urination and increased number of trips to the toilet are commonly caused by the following reasons: 1, non-pathological frequent urination: such as drinking too much water, or excessive mental stress, anxiety, as well as the surrounding environment temperature is too low, the use of diuretics, a large number of ingested watermelon, drinking coffee, etc., can lead to an increase in the volume of urine, as well as increased frequency of urination; 2, pathologic frequent urination: divided into urethral and non-urethral diseases, urethral diseases include urinary tract Infections, stones in the ureter or bladder, prostate hyperplasia or inflammation, acute renal failure, bladder tumors, and congenital developmental abnormalities of the urinary system and other diseases. Frequent urination caused by non-urethral diseases, including diabetic patients with abnormally elevated blood glucose that is not effectively controlled, which can cause osmotic diuresis, as well as urolithiasis caused by lack of antidiuretic hormone secretion due to hypothalamus pathology and bladder compression by the enlarged uterus in late pregnancy, can cause frequent urination.