If a 7-month-old baby has a cold with no ventilation in the nose, if there are no symptoms of fever, it is considered to be a viral cold caused by cold. But the symptoms are mild, in this case it is recommended not to do special treatment, drink more boiled water can be. Diet should also be light, just drink milk and eat some rice soup, do not eat other supplementary food, after a week will be cured. If necessary, you can also take some pediatric cold granules, avoid being cold and windy, do not go to a crowded place. Nasal congestion, the first thing to do is to clean up the nasal secretions, soften the boogers with a few drops of sesame oil, be careful to dig out. You can also use a hot towel on the root of the nose to help ventilation, or you can use a drop of furosemide nasal drops before bedtime or before eating milk, and then put a ventilated nasal patch. Children need special care during colds and need to rest. Keep the room temperature constant, maintain a constant humidity, and disinfect the room with vinegar fumigation.