The Heimlich first aid training model is a teaching tool used to teach and practice Heimlich maneuver. This model is usually made of plastic and simulates the upper body of an adult, including the chest and abdomen. In biology teaching, this model can help students understand and master the correct steps and techniques of the Heimlich maneuver, which is a first aid measure used in cases of airway foreign body obstruction. By performing practical operations on the model, students can learn how to correctly stand behind the patient, wrap their arms around the patient's waist, and perform fast and powerful abdominal impacts to help the patient expel foreign objects blocking the airway.