A 20-day-old baby with a cold is usually considered to be infected by a cold or an adult with a cold at home. If an adult has a cold, first of all, pay attention to isolation, if the baby’s symptoms are not obvious, you can feed some water, pay attention to keep warm. If there is nasal congestion, you can use a hot towel to compress the root of the nose, or right cotton swabs to carefully clean the secretions in the baby’s nasal cavity, or use furosemide nasal drops in the baby’s milk before eating or before going to bed, but also can be in the breastfeeding cushion the head and shoulders, to improve the congestion of the nose. If there is fever or poor spirit, you need to go to the hospital. You can also feed your child some pediatric cold and flu preparations, such as Xiaoqiqi, pediatric aminophenol xuanamin granules, or Banlangen granules. Cold is a growing process of the child and also a process of strengthening resistance, do not believe that any medicine can cure cold. If it’s a cold and no fever, it’s okay to let your child hang on to his nose for a few days, don’t use antibiotics, your baby will be dependent on them.