Urine is very hot to consider the possible existence of urethritis, cystitis, pyelonephritis and other diseases, in addition to the infection of gonorrhea and other sexually transmitted diseases may also appear urethral burning sensation. 1. urinary tract infection: clinical urethral burning sensation is generally considered to be the presence of urinary tract infection, when there is urethritis, cystitis and other infections, the urethral mucosa inflammatory changes, manifested as edema, vesiculitis, etc., and therefore there will be a burning sensation when urinating. 2. Kidney disease: In addition, when pyelonephritis occurs due to immune disorders, burning sensation in the urethra may also occur, accompanied by back pain and other symptoms. 3. Sexually transmitted diseases (STDs): In addition, if there is a history of unclean sex, it may lead to infection of sexually transmitted diseases such as gonorrhea, and urethral burning sensation and itching sensation may also occur at this time. Urethral burning sensation may also be caused by other factors, therefore, it is recommended to go to the hospital for further urinalysis and ultrasound of the urinary tract and other tests to determine the cause of the disease.