Cupping usually takes about 10 to 15 minutes at a time. There are many benefits of cupping; firstly, cupping can cure diseases, secondly, cupping can promote blood flow and so on. 1. Treating diseases: cupping can dispel wind and cold, which is good for colds and rheumatism caused by wind and cold, and can also relieve discomfort in the neck, shoulder, waist and legs. 2. Promote blood flow: Cupping can dilate blood vessels, promote blood circulation and smooth blood flow. However, if the cupping is left for a long time, the skin will blister, and if the blister is pierced without formal sterilization, it may be infected, so pay attention to the time, usually 10-15 minutes is appropriate. If the patient feels uncomfortable, it is recommended to go to a regular medical institution to avoid adverse reactions.