Urinary tract infection and urethritis are different in concept, clinical manifestations, treatment and other aspects, urethritis belongs to a kind of urinary tract infection. 1. Concept: urinary tract infection is an infectious disease of the urinary system, including upper and lower urinary tract infections, lower urinary tract infections mainly include cystitis and urethritis, urethritis is a part of urinary tract infection. 2. Clinical manifestations: Upper urinary tract infection in urinary tract infection mainly manifests as fever, chills, low back pain, while the symptoms of urinary frequency, urinary urgency and urinary pain are less severe, and most of them have percussion pain in the kidney area, and the lower urinary tract infection mostly manifests as urinary frequency, urinary urgency and urinary pain. Urethritis can manifest as urethral itching, tingling, urinary discomfort and discharge of purulent secretions. 3. Treatment: upper urinary tract infections mainly need bed rest, drink more water, choose levofloxacin and other antibiotics treatment 7~14 days, lower urinary tract infections generally also need to drink more water, take levofloxacin and other treatments for 3 days, can also be adjusted according to the actual situation of 7 days. Urethritis treatment is based on penicillin, ceftriaxone and other antibiotics, mostly need to be treated for 7~14 days. Drugs need to be applied under the guidance of a doctor. UTI belongs to a kind of urinary tract infection, it is recommended that those who suffer from UTI or urinary tract infection consult a doctor in time for treatment.