Foreign bodies entering the lungs include food debris embedded in the lungs, or gas, fluid, or bronchial stagnation. Usually after aspiration through the mouth or reflux through the esophagus, the foreign body enters the trachea and becomes trapped between the trachea and lung tissue. A CT scan of the lungs determines that a foreign body has entered the lungs and that it must be removed as quickly as possible. After CT scanning, fiberoptic bronchoscopy or electronic bronchoscopy should be used for exploration, and the diagnosis should be confirmed after exploration, and the foreign body should be removed under fiberoptic bronchoscopy or electronic bronchoscopy intubation, and if it causes inflammation and infection after removal, certain antibiotics should be applied to treat it, which can be a therapeutic effect.