Burning urine may be caused by physiological reasons, urinary tract infections and other pathologies of the urinary system. 1. Physiological reasons: the body drinks less water leading to urethral dryness, during urination urine concentration on the urethra will have a slight stimulation, resulting in burning urine. 2. Urinary tract infection: urethritis, cystitis, pyelonephritis and other lesions, due to bacterial, fungal, mycoplasma and other microbial infections, urinary tract infection occurs, the mucous membrane of the entire urethra is in a congested, edematous, vesiculoblastic condition, inflammatory secretions will stimulate the urinary tract epithelium, so it will become abnormally sensitive, resulting in burning urination. 3. Other factors: urinary stones, tumors, tuberculosis and other lesions, can also cause similar symptoms of infection, can appear burning urine. Such as stones in the flow through the urethra damage to the urethral mucosa and cause burning sensation during urination. Kidney tuberculosis, bladder tuberculosis and other diseases when the urine contains a large number of tuberculosis mycobacteria and purulent secretions, stimulation of the urethral mucosa can produce burning sensation. When there is burning urine and can not be relieved, it is recommended that the patient go to the hospital for relevant examination and treatment, to avoid delaying the development of the condition. At the same time, usually need to pay attention to a light diet, do not eat spicy stimulating food, and pay attention to personal hygiene, change underwear.