If urinary tract infection is not treated in time, it may occur: 1. The infection spreads like the upper urinary tract, i.e. from the initial urinary frequency, urinary urgency and painful urination gradually develops into back pain, abdominal pain, and even chills and high fever, etc. In serious cases, perinephric abscess may be formed. The accumulation of pus in the kidney can cause infectious shock and endanger the patient’s life.2. Urinary tract infection leads to gradual aggravation of urinary tract irritation symptoms and affects the quality of life. Such as frequent urinary frequency, urinary urgency and painful urination, which makes it impossible to work and study at ease and affects patients’ social life.3. Causing infections and infections in other systems can lead to a decrease in body immunity. Gradually, systemic toxicity symptoms such as chills, high fever and poor mental status will appear. And the inflammatory cells spread to other systems by blood transport, causing lung infection and gastrointestinal infection, cough, stuck sputum, dyspnea, shortness of breath and chills, high fever, etc.