There are more reasons for frequent urination and scanty urination, including urinary tract infection, urinary tract stones, urinary tract tuberculosis, urinary tract tumors, prostatitis and other diseases, and the specific causes need to be identified. The first thing to consider is that it is caused by a urinary tract infection, which is also a relatively common factor. Most of them are accompanied by painful urination, lower abdomen and lower back pain, and the urine test will show white blood cells above the normal range, and there may even be red blood cells. Secondly, urinary stones and urinary tuberculosis are also related, because stones and tuberculosis bacteria inside the urinary tract irritate the mucous membrane of the urethra causing frequent urination, because the number of urination increases, so the volume of urine is very little. Finally, men should also consider the prostate disease caused by chronic prostatitis, prostate hyperplasia, etc., resulting in congestion and edema of the prostate gland, because the pressure on the urethra leads to frequent urination and little urination occurs, need to be combined with other clinical symptoms and related tests to make a comprehensive judgment, according to the cause of further treatment under the guidance of the doctor.