Cupping therapy is also known as fire cupping therapy or suction tube therapy. It is the use of cans as a tool, using combustion, suction, steam and other methods to cause negative pressure in the tube, so that the cans adsorbed in acupuncture points or certain parts of the body surface, to achieve the role of adjusting the function of the body. Women cupping two shoulder hair purple, usually due to the negative pressure in the can caused by capillary seepage of blood, most of them belong to the normal phenomenon. If the black purple shoulder is more serious or does not subside within a week, it is possible that the cupping operation is too long and too strong, resulting in purple skin on the shoulders. In addition, it is also possible that the patient’s body is cold, the Qi and blood do not run smoothly, and the cold clots and blood stasis, resulting in purple marks on the shoulder skin. Patients should pay attention to rest and warmth after cupping, avoid stimulation by wind and cold, do not take a bath for 24 hours, and do not blow directly on the cupping area with a fan or air conditioner, otherwise it will easily cause wind and cold invasion and affect the effect of cupping.