Through either heat or suction, a vacuum is created in a cup to facilitate the attachment to the affected area on the skin. The therapy is a means to clear and activate the meridian channels and its collateral points to promote the flow of Qi and blood circulation. The outcome brings relief to swelling and pain, and removes pathogenic wind and cold. 

It is effective in treatment of nervous headache, occipital neuralgia, facial nerve spasm, cervical muscle spasm, gastrocnemius spasm, diaphragmatic spasm, and numbness of limbs caused by rheumatic diseases or strain.