Bloodletting cupping is often used clinically for the treatment of painful limb distention, traumatic stasis, poisoning and other disease symptoms. The appearance of bloodletting cupping cupping out of sticky blood clots, may be due to the cupping time is too long, blood in the negative pressure of the tank, long exposure to air contact, the formation of sticky clots, this situation is a normal phenomenon, such as no other discomfort can be observed after continuing treatment. In addition may also be related to pathological factors: 1, blood viscosity: some patients due to physical aging, lipid elevation and other factors, can lead to increased blood viscosity. When performing bloodletting cupping treatment, the blood can appear sticky and clot-like after piercing the skin. It is recommended to check blood lipids, such as high blood lipids, should pay attention to daily diet, avoid high cholesterol food intake, moderate exercise, etc.; 2, internal toxins: some patients, such as after being bitten by poisonous insects or poisonous snake bites, can also use bloodletting cupping treatment locally to relieve symptoms. A black and purple blood clot may appear after cupping, associated with local toxins and cell necrosis. The bite can usually be treated with appropriate medications and local debridement and other treatments under the guidance of a physician depending on the type of species that was bitten. From the point of view of Chinese medicine, patients with bloodletting cupping cupping out sticky blood clots may also be related to qi and blood stagnation and damp heat in the body, it is recommended that a regular hospital should be chosen for cupping treatment, and the situation of cupping out sticky blood clots should be treated by the doctor. In daily life, pay attention to a reasonable diet, clean and dry local wounds to avoid infection, etc.