The symptoms of burning at the urethral orifice are possible causes: 1. Acute UTI, when the urinary tract is infected, if the infecting bacteria only stay at the urethral orifice or urethra locally, there can be burning at the urethral orifice, and symptoms such as increased frequency of urination, burning in the urethra during urination, painful urination, and a sense of incomplete urination. In this case, it is necessary to take urine for routine urine examination, if a large number of leukocytes or elevated leukocyte esterase can be seen in the urine, it can confirm the existence of acute urethritis and requires anti-infection treatment. 2, urethral polyps with infection, often seen in female patients. The urethral mucosa prolapses, forming local polyps or caruncle-like changes, due to long-term chronic inflammatory stimulation, or local friction and lead to infection of the urethral polyps or caruncles, then the symptoms of burning urethral orifice can appear, but also the symptoms of pain in the urethra. The physical examination reveals small polyps or caruncles in the urethra with local redness, accompanied by redness and edema of the urethra, which need to be treated with topical antibiotics.