A foreign body is a foreign body that is accidentally inhaled into the trachea or bronchus and cannot be coughed up on its own. There are many different types of foreign bodies, including animal bones, fish spines, metal objects, plants, and denture. Foreign body aspiration into the airway can affect the patient’s whistling and can be life-threatening in severe cases. Foreign bodies in the airway are commonly found in children, accounting for the third most common accidental injury in children, especially under the age of 5. The incidence of airway foreign bodies increases in the elderly due to a sluggish pharyngeal reflex and poor airway sensitivity. However, it may also occur in adults. Talking and laughing in the diet or eating too fast may cause foreign bodies such as fish spines, date kernels, bones, and chili peppers to be inhaled into the airway, and the foreign bodies can cause serious infections when they obstruct the airway or are inhaled by mistake. The clinical manifestations of airway foreign bodies vary widely, and the size, shape, location and duration of the foreign body in the airway may affect the patient’s symptoms. Patients may have no clinical symptoms, or may show non-specific manifestations such as coughing, coughing, hemoptysis, etc. In severe cases, chest pain, shortness of breath, or even asphyxia and death may occur. Treatment 1, self-help When an adult has a foreign body obstruction in the trachea, he should immediately lie down on his abdomen on the back of the chair and quickly squeeze the upper abdomen downward, so that the foreign body can be discharged by generating air pressure. 2, “Heimlich maneuver” “Heimlich maneuver” is the standard method for rescuing foreign body into the trachea worldwide, and is called “the hug of life”. (1) The resuscitator stands behind the patient and wraps both arms around the patient’s waist. Make a fist with one hand and place the thumb side of the fist on the patient’s thorax and abdomen above the umbilicus. (2) Grasp the fist with the other hand and compress the patient’s abdomen with rapid upward pressure. (3) Repeat the above techniques until the foreign body is expelled. If the foreign body cannot be expelled by the above methods, seek medical attention to remove the foreign body as soon as possible to prevent asphyxia and other respiratory complications. In addition, patients with coughing and asthma, pneumonia and other long-standing conditions can also go to the hospital for bronchoscopy to rule out foreign body blockage. Foreign body removal by bronchoscopic forceps is currently the most convenient, effective and widely used treatment method, and 90% of airway foreign bodies can be removed by bronchoscopy.