The diagnosis of urethritis is based on the etiology, history and clinical manifestations, as well as laboratory findings. In terms of etiology, if a patient has long-term urethral stones, or urethral obstruction, or foreign bodies in the urethra, such as having a cystoscopy or indwelling urinary catheter, all may lead to the development of UTIs. In addition, from the clinical manifestation, if the patient appears obvious urinary frequency, urinary urgency, urinary pain, or even hematuria, with blood clots in the urine, the possibility of having UTI is higher, at this time, then routine urine examination, if you see an increase in white blood cells or even pus urine, a few patients may be combined with an increase in red blood cells, the possibility of considering UTI is higher, you can further conduct urine If you have a urinary tract infection, you can have a urine culture test and a urinary tract discharge test to help confirm the diagnosis and clarify the type of infection.