A 10-day-old newborn can use a pacifier, especially for newborns who usually cry easily and have colic. It is better to use a soother. The soother can avoid swallowing too much gas when crying, and the child also feels more secure, which can calm the baby’s emotions and is conducive to the child’s rest and sleep. If the child is usually quiet after breastfeeding, and soon goes to sleep, the general condition is also better, and the usual crying is not much, do not need to use a soother. Pacifiers should be of the right type and material, and you should pay attention to the hygiene of the pacifier, and sterilize it in time to avoid causing oral infections in your child.