First of all, patients should pay attention to rest after catching a cold to avoid getting cold and flu again. Patients should also avoid staying up late, exertion and strenuous activities. Swimming is a physical activity, the exercise is large, may lead to physical exhaustion, is not conducive to their own recovery, easy to lead to the patient again corresponding respiratory tract infection. Secondly, after swimming, it is easy to get cold, then the patient due to cold and cold symptoms, or even the formation of lower respiratory tract infection, manifested as symptoms of pneumonia. Therefore, after the cold, the patient can not be strenuous activities, the patient at this time can through a nutritious diet, maintain good habits, through slow walking, cycling and other soothing exercise, gradually restore their own resistance and immunity, to be after their physical strength to return to normal, and then appropriate for swimming.