If a woman experiences blood in the urethra after urination, the most common cause is a urinary tract infection. Because of the physiological characteristics of women’s structure, resulting in women relative to men are more prone to symptoms of urinary tract infections. It is also characterized by frequent urination, urgency and painful urination. Clinical choice of levofloxacin or fosfomycin as the first choice of drug treatment, the drug cycle is about 3-7 days. Clinically, bleeding from the urethra can also occur due to other urinary tract diseases, such as urinary tract tumors or urinary tract stones. If a woman has the clinical manifestation of blood in the urethra after urination, she should go to the hospital and check the urine routine and ultrasound of the urinary tract. Through routine urine examination, it can be found that the number of red blood cells in the urine is elevated, and also determine whether the white blood cells in the urine are elevated. If the white blood cells and red blood cells in the urine are both elevated at the same time, it is considered that inflammation is more likely. Through ultrasound examination can find out whether there are occupying lesions in the urinary system, whether there are stones or trauma.