The model is constructed with simulative leg model and great saphenous vein incision model, consisted of skin and subcutaneous tissue with clear layer, realistic tissue tension and elasticity. The leg model is made of imported PVC material, with its skin made of flexible silicone material and internal filled with foam. There is a 14.4×3.9cm groove above the medial malleolus of leg model to place great saphenous vein incision module, with its internal embedded simulative blood vessel which simulate great saphenous vein running design. The module blood vessels can be easily replaced. The model is one of the most commonly used teaching aids for clinical great saphenous vein incision operation.