Urethral stones may cause painful symptoms, and severe pain may occur if the stone is large or if the stone is embedded in the urethra. The main symptoms of urethral calculi include difficulty in urination, divergence of the urinary line, hematuria, and discharge from the urethra, etc. Some patients may also experience mild discomfort, pain and other symptoms, which usually do not cause severe pain. However, in some patients, urethral stones are large in size and may be embedded in the urethra in the process of activity, which may cause severe pain, and the pain may even radiate to the entire penis. If the above symptoms occur, you should go to the hospital for diagnosis and follow the doctor’s instructions for treatment.