If you are sore after urinating, it is recommended to go to the hospital for relevant examinations to clarify the specific causes. First, urethral infection, there can be some changes in the mucosa of the urethra, such as congestion, edema, erosion and other changes, can cause urinary discomfort symptoms. Such as localized pain or soreness, accompanied by frequent urination, urinary urgency and other symptoms. It is recommended to conduct routine urine tests to further determine. Second, if there is a urethra occupying lesion, such as stones, tumors, polyps, etc., can cause discomfort in the urethra after urination. The presence of localized distension and soreness requires urethroscopy to further exclude the presence of related diseases. At the same time, the patient may have urethral secretion of some bloody secretion, or some white secretion, etc., need to carry out the relevant secretion of the pathogenicity of the test. Third, with sexually transmitted diseases, can also cause urethral soreness, such as mycoplasma, chlamydia infection, or gonococcal infection, can appear urethral soreness. At the same time can be accompanied by an increase in urethral discharge phenomenon, especially after unclean sexual contact, the relevant symptoms, we should consider the possibility of sexually transmitted diseases.