Itching during cupping may be caused by allergic reaction, improper operation, infectious factors or the individual himself suffers from underlying diseases. 1. Allergic reaction: Alcohol and other instrument materials will be used in the cupping process, and some people may be allergic to them, thus causing skin itching. If this is the case, it is recommended to stop cupping immediately and treat the symptoms. 2. Improper operation: Cupping with great strength and for a long time may lead to the expansion of local capillaries, which in turn leads to itchy skin. If this is the case, it is recommended to reduce the strength and shorten the cupping time. 3. Infection factors: the instruments and materials used for cupping are not sterilized or the skin is damaged during cupping, which may cause skin infection and itching. Therefore, it is important to pay attention to fully sterilize the instruments and to deal with skin damage in time to prevent infection. 4. Individuals with underlying diseases: some people suffer from skin diseases such as urticaria and other diseases, the symptoms will appear after cupping. Before cupping should be asked in advance whether there are underlying diseases to exclude the contraindications of cupping crowd. In conclusion, allergy to equipment, improper operation of cupping, skin infection or underlying diseases may cause itching after cupping. If there are symptoms of itching after cupping, it is recommended that patients clarify the cause of the disease under the guidance of a doctor before treatment. If the symptoms are serious, please go to the hospital in time, do not delay the condition.