The symptom of blood in urine in bladder cancer can occur at any stage of the disease process. When bladder cancer patients have blood in urine, it is mainly due to the rupture of tumor lesion. Blood in urine is a typical symptom of bladder cancer patients, and the early stage of lesion is usually dominated by intermittent hematuria, which can evolve into persistent hematuria in the course of disease development, and it is not possible to differentiate the stage of bladder cancer by hematuria blood. The symptom of blood in urine in bladder cancer is mainly due to the fact that some blood vessels of bladder cancer surface tumor rupture under the action of urine impact, causing bleeding, which will be discharged along with urine to form hematuria. Most of the patients whose hematuria symptom is not very serious can stop it by themselves, but it is easy to reappear again after a period of time. If the symptom of blood in urine occurs, one should go to regular hospitals under the guidance of doctors and take active treatment to avoid aggravation of the symptom and serious consequences.