The fiery pain of urination may be related to stones, urethritis, cystitis and other diseases. It is recommended that patients go to the hospital in a timely manner, can carry out urine examination, clear cause, cause treatment. 1. Stones: such as kidney stones, ureteral stones, bladder stones and so on. It can lead to frequent urination, urinary urgency, urinary pain, hematuria, dysuria and other symptoms. 2. Urethritis: Urethral inflammation can be caused by Neisseria gonorrhea, Chlamydia trachomatis, trichomonas and so on. The main manifestations are urethral itching, painful urination, redness and swelling of the urethral opening, urethral discharge and other symptoms. 3. Cystitis: Inflammation of the bladder due to specific and non-specific pathogenic bacteria, usually accompanied by urethritis. The main manifestations are frequent urination, urinary urgency, urinary pain, lower abdominal pain, fever, chills and other symptoms. To summarize, if the symptoms of hot and painful urination appear, you should seek medical treatment in time.