Gas cupping is a method of physical therapy in Chinese medicine. It is usually considered appropriate to leave the gas cupping for 10-20 minutes, but there are individual differences that need to be analyzed on a case-by-case basis. Qi cupping is a very common treatment. If you have back pain, back pain and other pains, cupping can have a very obvious therapeutic effect. Also cupping helps to penetrate the dampness and coldness in the body through the skin tissue, which can eliminate evil qi and is beneficial to health. It is usually considered appropriate to leave the qi cans in place for 10-20 minutes, but individual differences need to be noted. If the canister is large and has a strong suction force, the retention time should be reduced appropriately. For patients with sensitive skin and poor tolerance, the duration of suction and cupping should also be reduced. In addition, patients with weak skin or weak constitution should not leave the cupping for too long to avoid local blisters. In addition, patients need to pay attention to the fact that cupping should be done after the removal of the cupping marks left by the last cupping to avoid damage to the skin of the body.