Frequent urination after catching a cold can be caused by physiological factors, or psychological factors that cause frequent urination or urinary tract infections. Different causes of treatment methods are different, including the improvement of the surrounding environment, oral medication and so on. 1. Physiological factors: If the surrounding environment is relatively cold, it is likely to lead to increased urination, improve the environment after frequent urination can be relieved to a certain extent. 2. Psychological factors caused by frequent urination: psychological factors caused by frequent urination, should pay attention to rest, pay attention to warmth, relaxation, may be able to recover on their own, if not able to alleviate, can be combined with the use of Tolterodine, Solynacin and other drugs treatment. 3. Urinary tract infection: catching a cold may cause the body’s immune system to decline, pathogenic bacteria may cause urethritis, prostatitis, cystitis and so on, resulting in frequent urination and other symptoms. You can drink more water to increase the amount of urine, while taking levofloxacin and other drugs to treat. It is necessary to pay attention to the side effects and adverse reactions of drugs, please use the above drugs under the guidance of a doctor. Frequent urination after catching a cold, you need to go to the hospital to check the cause of the disease, under the guidance of the doctor to use medication, can not abuse the drug.