Urinary infection refers to the inflammation caused by the invasion of pathogens into the urethra, ureter, bladder and kidneys, etc. Some patients may have the symptom of pain at the root of the thighs, and the appearance of pain at the root of the thighs, along with the possibility of other diseases should be considered. Usually, diseases such as urethritis, cystitis and nephritis will cause patients to experience discomfort such as frequent urination, urgency and pain. However, there are some patients who have localized lymph node enlargement due to infection, which in turn triggers the symptom of thigh root pain. It should be noted that, in addition to the above diseases, epididymitis, varicocele, groin strain and other diseases, may also lead to thigh root pain. To summarize, some patients with urinary tract infections may experience the above symptoms, but this symptom may also be caused by other factors. Therefore, it is recommended that patients go to regular hospitals as soon as possible to see a specialist to confirm the cause of the disease and follow the doctor’s instructions for treatment, so as to strive for a speedy recovery.