The operation of gas cupping should be set up in a suitable position, according to the part to be extracted, place the gas canister, use the pumping gun to extract the gas in the canister 2~4 times, to the extent that the suction is tight and can be tolerated, and then leave it to stand for 5~10 minutes. Before cupping, the first thing to do is to make clear whether the patient is suitable for applying this method, and the second thing is to carry out the correct operation, so as to dispel dampness and cold, and energize the meridians and collaterals. If the patient is suffering from shoulder and back discomfort, it should be clarified whether the discomfort is caused by cardiovascular disease, digestive disease or cholecystitis, if so, the patient should go to the hospital for treatment actively, and do not perform qi cupping in order to avoid delaying the treatment. When operating, first of all, the operator should set up a suitable position, fully expose the parts to be extracted, according to the size of the parts, in the acupoints or local selection of different types of gas cans placed, with the pumping gun placed on the end of the canister body to draw out the gas in the canister 2 to 4 times, to suck the degree of tight and tolerated, static for 5-10 minutes to deflate to take down, should be deflated and then take down, do not force to yank down, in order to avoid damage to the skin to produce pain. Cupping and fire cupping are similar, can play a role in dispelling dampness and cold, through the role of the meridians, gas canister operation is simple, you can operate at home, but the operation needs to be careful, any discomfort, please go to the regular hospital in a timely manner, so as to avoid delays in the condition.