The redness of the patient’s urethra may be due to excessive localized friction, UTI, over-irritation and other factors. It usually takes about 7 days to wash with the medication, but the exact time varies depending on the severity of the condition and other factors. Generally patients need about 7 days when using medication for washing, but for patients with more serious conditions, the time needed, may be extended. But by the severity of the disease, personal constitution, care and other factors, the specific time there is a certain difference, can not be generalized. Once the patient appears urethral red, if there is a long time with medication treatment is ineffective, it is recommended to go to the hospital in time for examination, and under the guidance of the doctor according to the actual condition of the choice of appropriate treatment.