If a baby swallows a foreign body stuck in the throat or esophagus, the following symptoms can occur: 1. crying, reluctance to eat, nausea, vomiting, and even a lot of drooling; 2. severe foreign body obstruction in the esophagus can lead to ulcers, esophageal perforation, etc., and can also injure the airway, coughing, hemoptysis, breathing difficulties, and even asphyxiation; 3. if the foreign body enters the airway directly, the baby can suddenly If the foreign body enters the airway directly, the baby can suddenly appear violent cough or shortness of breath and other symptoms, serious asphyxia can occur. If you suspect that your baby has swallowed a foreign body, the first thing you should consider is the type of foreign body you have swallowed. If it is a battery type, the child should be sent to the hospital, and protective treatment should be given during this process; if other foreign bodies are swallowed, hospital examination is also recommended; metal foreign bodies can be detected by neck, chest and abdominal X-ray; non-metal foreign bodies should be examined by local ultrasound, or even by imaging, to give a clear diagnosis.