After cupping the skin black and purple reasons 1, the jar mark purple black and dark: generally indicates insufficient blood supply, poor menstruation with blood stasis phenomenon. 2, the jar issued purple and accompanied by plaques: generally indicates cold clotting blood stasis. 3, the jar mark is scattered purple dots, and the depth is one, indicating Qi stagnation and blood stagnation. 4, the jar mark is bright red and colorful: generally indicates Yin deficiency, Qi and blood deficiency or Yin deficiency and fire. Can mark bright red and bright: generally indicates Yin deficiency, Qi and blood deficiency or Yin deficiency fire. 5, jar marks red and dark: indicates high blood lipids, and heat evil. Can mark red and dark: indicates high blood lipids, and there is heat. 6, the jar mark grayish white, not warm to the touch, mostly cold or damp. Can mark gray, touch and not warm, mostly cold or damp. 7, the surface of the jar mark with skin lines or slightly itchy: indicates wind or dampness. 8, there is water on the inside of the tank: indicates that there is dampness in the area. 9, the jar seal appears blisters, indicating heavy dampness in the body, if there is blood inside the blisters, is the reaction of dampness and heat toxicity.