1. When the patient is standing, the operator should be behind the patient, wrap both arms around the patient’s waist and hold them tightly, hold the patient’s abdomen with the thumb of one hand in a clenched fist, which can be slightly higher than the umbilicus and under the rib cage, hold the other hand tightly in a clenched fist, and pressurize the patient’s abdomen with a sudden and rapid upward impulse (repeat several times if necessary), and the foreign body can be sprayed from the throat to the mouth and flushed out of the body (be careful not to extrude the chest). 2. When the patient is sitting, the operator can take a standing or kneeling position behind the chair and apply the above techniques. 3.When the patient is lying on the thermometer, first turn him/her over to the supine position, then the operator kneels across the patient’s two hips, places one hand on top of the other, and presses the root of the palm of the following hand on the patient’s abdomen (under the umbilicus on the edge of the ribs of the chest), and then squeezes the patient’s abdomen with a rapid upward impulse. 4, the patient’s self-help, to their own thumb side of the fist placed in the abdomen, the other hand to hold this hand, the same fast upward pressure abdomen, will be sprayed to the mouth and discharged out of the body. The main effect of this method is to compress the upper abdomen, thus squeezing the lungs and making the air suddenly rushed out from the sound gate, and at the same time may make the foreign body rushed out of the body. This method is theoretically reasonable, and it is feasible to combine it with artificial respiration according to this practice.