The glans sting when urinating, then the possible causes: first, acute urethritis, then there can be urethral mucosa congestion, edema, erosion and other changes. Urine passes through the surface of the mucous membrane of the erosion when urinating, which can produce a strong stinging pain, pain can be radiated to the penis sponge or glans and other parts of the penis. Serious patients, even can appear urethral blood or hematuria, etc., it is recommended to carry out routine urine examination, or urine culture examination to confirm the diagnosis of infection. Second, urethral calculi, when the stone obstruction in the urethra, resulting in local mucosal inflammatory changes, which can produce a pronounced tingling sensation or accompanied by increased pain during urination, to the glans, the penis spongy radiation and other symptoms. At the same time may also be accompanied by poor urination, urinary effort or urinary diversion, urinary difficulties and other symptoms, it is recommended to carry out urethroscopy to confirm the diagnosis of urethral calculi.