If a baby accidentally swallows a foreign body, how long it takes to pass the dangerous period is a matter of different judgment for different foreign bodies and cannot be generalized. If the foreign body swallowed by the baby is not particularly large and sharp, usually the foreign body can be expelled from the body through the gastrointestinal tract, and generally the time to expel the foreign body is about 3-7 days. During this period, you need to feed your baby high-fiber foods to promote the peristalsis of the gastrointestinal tract and speed up the expulsion of foreign bodies. If your baby swallows a large foreign body, you need to go to the hospital immediately to remove the foreign body so that it does not get stuck in your baby’s airway and cause suffocation. In addition, if your baby swallows a foreign body that is corrosive, you need to go to the hospital immediately to remove the foreign body so that it does not corrode your baby’s body. In daily life, parents need to pay close attention to the baby’s every move to avoid accidents due to accidental ingestion of foreign bodies.