Amoxicillin is a broad-spectrum antibiotic that has a strong bactericidal effect on both gram-negative and gram-positive bacteria, mainly by destroying the cell wall of the bacteria to achieve the bactericidal effect, and can be used in the treatment of urethritis, the effect is better than ampicillin. The actual UTI can be treated by oral medication, and the severe one can be treated by intravenous infusion, usually drink more water, pay attention to whether there is a history of allergy before taking the medication, it is best to do an allergy test, allergy may appear rash, fever and other symptoms, stopping the medication can be improved.