The main difference between acute UTI and chronic UTI is the different length of the disease. Chronic urethritis is characterized by frequent, urgent and painful urination, and most patients have symptoms such as a slight burning sensation and itching at the urethral opening, but the duration of the disease is longer, over 3-4 months; acute urethritis has a more urgent onset, and there will be obvious frequency, urgency and painful urination, and in severe cases, there will also be symptoms such as hematuria and fever, and general discomfort, which can be treated with anti-infection therapy and cured in 1-2 weeks. The onset of acute urethritis can lead to chronic urethritis if it is not completely cured. Whether it is acute or chronic UTI, during this period it is recommended to drink a lot of water to increase the volume of urine, flush the urethral secretions when urinating, pay attention to rest and avoid sexual intercourse for a short period of time.