The Heimlich maneuver for 3-5 year olds is generally used when a child has difficulty breathing from food, acute choking, etc. It can be operated by having the child lie on his or her lap or kneeling behind the child. The specific procedure is as follows: When using the Heimlich first aid method, you can let the child lie on his legs, use the left hand to fix the neck and head, and use the right hand to slap the middle of the shoulder blade, so that the pressure in the chest cavity will change, which is conducive to the pressure in the chest cavity to expel the foreign body, relieve breathing difficulties and acute choking. In addition, another method can also kneel behind the child, hands holding the upper part of the child’s navel, backward and upward force, to give the abdominal cavity pressure to promote the discharge of foreign bodies. It is recommended that children with symptoms of respiratory distress should be sent to the hospital in time for treatment, usually in the food must be chewed and swallowed slowly, to prevent choking, resulting in adverse consequences.