After taking sensitive anti-infective drugs for acute UTIs, the symptoms are usually relieved significantly in 1-2 days, but to completely clear the pathogens and get the disease completely cured, you have to continue taking anti-infective drugs for 7-10 days after the symptoms are relieved. If there are no white blood cells or pathogens in the urine routine, the acute UTI will be considered completely cured, so the acute UTI should be taken for at least 7-10 days. In addition, if there are still leukocytes or pathogens when the medication is discontinued and rechecked, you have to re-treat the infection, and it is best to perform urine culture and drug sensitivity tests to identify the type of infection and then choose a sensitive antibiotic for treatment, which may take longer and may require more than 2-4 weeks of medication.