There is blood in the urine of women going to the toilet, which may be due to the following reasons: 1. First of all, gynecological bleeding should be ruled out, such as whether it is within the menstrual period or whether it is suffering from gynecological diseases that cause vaginal bleeding to be mixed with urine and mistaken for urine blood, which requires gynecological related examination. 2. If it is clear that the urinary system is hematuric, then it may suffer from urinary tract infection. The infection is accompanied by acute congestion and edema of the mucosa of the urinary tract, accompanied by bleeding from the mucosa, and this results in hematuria of the naked eye. The patient also has urinary tract irritation symptoms such as urinary frequency, urinary urgency and painful urination. A routine urine examination is needed to further confirm the diagnosis.3. If you have urinary stones and urinary tumors, bleeding will occur. Stones can be accompanied by pain in the area where the stones are located, such as back pain and abdominal pain. In contrast, tumors are usually not accompanied by obvious pain, but simply manifest as hematuria in the naked eye. However, when the tumor increases in size and causes compression or invasion, painful symptoms may appear, and further diagnosis by ultrasound or CT of the urinary system is needed.