A positive urine occult blood test often represents the presence of red blood cells in the patient’s urine. Some women may show a positive urine occult blood test during their menstrual period, which is a normal physiological phenomenon, and it is recommended that the urine test be performed after the end of the menstrual period to determine whether there are other diseases. The inflammation may cause red blood cells in the urine, resulting in a positive urine occult blood test; 2. Urinary stones: kidney stones, bladder stones, ureteral stones, urethral stones, etc. may cause damage to the urinary tract, resulting in red blood cells in the urine, resulting in a positive urine occult blood test; 3. Tumors, bladder tumors, ureteral tumors, etc., may cause damage to the mucosa of the urinary tract or rupture of the blood vessels in the urinary tract, leading to a positive urine occult blood test. In addition, constipation, prostate hyperplasia, prostate hypertrophy, squeezing syndrome and other diseases may also cause patients to have a positive urine occult blood test. It is recommended that patients make a comprehensive judgment based on other test results such as urine protein test and kidney ultrasound to clarify the cause of the disease and provide timely treatment to avoid aggravation of the disease.