For urinary fever, the longest clinically seen in two cases: First, the most common cause is infectious factors, such as acute urethritis, acute bacterial cystitis, due to the stimulation of inflammatory substances can appear urinary fever, burning sensation in the urethra, serious cases can appear painful urination, there is urinary frequency, urinary urgency and other typical symptoms of urinary tract irritation, at this time should drink more water, keep the local clean, the application of antibiotic treatment 1-2 This time, you should drink more water, keep the local clean, and apply antibiotic treatment for 1-2 weeks to recover. Second, the mucosa of the urethra is damaged to varying degrees, mainly due to transurethral operations and surgical treatment after catheterization, such as urethral dilatation, cystoscopy, transurethral prostate surgery, transurethral bladder stone surgery, transurethral bladder tumor surgery, and transurethral ureteroscopy. Since most of the examination instruments are metal instruments, there are different degrees of mucosal damage to the urethral mucosa during the examination and treatment, so there will be burning sensation and pain in urination after the operation, and you should drink more water and apply antibiotic treatment for 1-2 weeks to recover completely.