Nasal foreign bodies in children may present with unilateral nasal congestion, nosebleeds or blood in the runny nose, foul-smelling expiration, and foreign objects visible in the nasal cavity on nasal endoscopy. Children are at high risk for nasal foreign bodies. Parents should be aware that children may insert small objects such as beans, glass beads, button batteries, etc. into their nostrils when they are playing. If your child has unilateral nasal congestion, mucopurulent nasal discharge, nosebleeds or blood in the nasal discharge, and foul-smelling breath, you should consider the possibility of a foreign body in the nasal cavity. You can ask your child if he or she has ever stuffed any objects into the nostrils, and you can also check for a foreign body in the nose under the light of a flashlight. When the above symptoms occur, it is recommended to take the child to the ENT department of the hospital in time, through the anterior rhinoscopy or nasal endoscopy to clarify whether there is a foreign body in the nasal cavity, and professional treatment.