The early symptoms of venous thrombosis in the lower extremities are pain, swelling, and skin bruising on the affected side of the limbs, so when there is unexplained swelling and pain in the lower extremities, you should be alert to the presence of venous embolism in the lower extremities. Gua Sha is our traditional Chinese medicine, indeed dredge meridians, blood circulation effect, for heatstroke, cold, gastritis, headache, rheumatoid arthritis, tonsillitis, toothache, etc. The effect is particularly significant, but for the treatment of venous thrombosis of the lower extremities has no effect, but instead of extrusion of the affected limbs and cause thrombus dislodgement, resulting in serious complications – pulmonary embolism, or even death. The actual fact is that it’s not a good idea to use it for any purpose. Therefore, patients should not use gua sha as a treatment, so as not to delay the condition.