Patients with symptoms of blood in the urine, pain in the urethra, and wanting to urinate all the time, which is also known as hematuria, painful urination, and frequent urination, may be caused by a variety of reasons, such as urinary tract infections, urinary stones, bladder tuberculosis, and tumors of the urinary system. It is recommended that patients go to the hospital in a timely manner, to clarify the cause of the disease, targeted treatment, so as not to aggravate the symptoms. 1, urinary tract infection: usually caused by bacterial infection of the urethral mucosa or tissues, the main symptoms manifested as urinary frequency, urinary urgency, pain in the urine, etc., but also accompanied by yellow pus discharge from the urethra, and some patients will have hematuria, and in severe cases, there can also be fever, chills, and other symptoms; 2, urinary system stones: mainly including Primary urinary calculi, metabolic urinary calculi, secondary or infectious urinary calculi, which can be caused by hyperthyroidism, bacterial infections and many other reasons. The main manifestations are hematuria, urinary pain, urinary frequency, and may also appear abdominal distension, nausea, vomiting and other symptoms; 3, bladder tuberculosis: usually secondary to renal tuberculosis, caused by pathogen infection, mainly manifested as urinary frequency, urinary urgency, urinary pain, hematuria, pus urine and other symptoms. Besides, it may also be accompanied by systemic symptoms such as fever, night sweating, fatigue, etc.; 4. Urological system tumor: it is often related to bladder cancer, urethral cancer, ureteral cancer and other diseases, and with the continuous development of the disease, it may manifest as urinary frequency, urinary urgency, hematuria, urinary pain, urinary retention, and other symptoms of dysfunctional urination.