Poor blood circulation in the left leg generally corresponds to the “blood stasis” category of Chinese medicine, cupping can be plucked in the Commission, Cheng tendons, Sea of Blood and other points to dredge the meridians, blood. 1. Commission: located in the popliteal fossa is in the center, has the internal organs and heat, tendon activation (stretching the tendons and bones, dredge the meridians), for the lower limb pain or limb unfavorable, lumbar and spinal pain, hemiplegia (one side of the limbs can not be free to move), lower limb paralysis (lower limb weakness, numbness and pain) and other symptoms have a certain role in alleviating. 2. Cheng tendons: located in the back of the calf, popliteal transverse stripe 5 inches below the gastrocnemius muscle belly, that is, on the calf belly, has a strong waist and knees, tendon relief role for local calf pain, cramps, gastrocnemius muscle spasms, and other symptoms have a certain role in relieving. 3. Sea of Blood: located above the knee, 2 inches above the medial end of the patellar base. It has the function of strengthening the spleen and resolving dampness (strengthening the spleen and getting rid of dampness), regulating menstruation and regulating blood, and is effective in treating impotence and weakness of the lower limbs caused by blood deficiency and pain in the knee joints. Cupping at the above acupoints is effective in treating poor blood circulation in the lower limbs, and the efficacy varies from person to person. Cupping is a professional operation, patients should not do it on their own, it is recommended to go to a regular medical institution to seek professional help, do not operate on their own to avoid adverse consequences.