Choking first aid techniques are as follows: 1, the Heimlich maneuver, Heimlich maneuver is mainly for the tracheal blockage of foreign bodies caused by the phenomenon of asphyxia, generally in the rescue of the rescuer standing behind the patient, arms holding the patient’s waist, hands clenched fist on the patient’s abdomen under the fenestra, and then squeeze the abdomen, relying on abdominal pressure to flush out the foreign body, to relieve asphyxia this effect; 2, take cricothyroid membrane First aid cricothyroid puncture, asphyxiation of patients in many cases is very critical, there is no time to send to the hospital, this time should be taken on-site cricothyroid puncture, rapid relief of asphyxia, can save the lives of patients; 3, percutaneous tracheotomy method, this method is more traumatic compared to cricothyroid puncture, generally in the field is difficult to do, should be operated in the hospital is more appropriate; 4, take the tracheal intubation method In this case, it should be done in the hospital through formal operating procedures to achieve smooth intubation to relieve asphyxia.