1. Simulate Asian elderly male right arm, elbow joint is slightly external rotation, thin skin, not very clear blood vessel;
2. Fine anatomical structure, with cephalic vein, basilic vein, medial cubital vein; all vessels can puncture;
3. Provide training of punctuation, infusion and haemospasia, etc. Puncture resistance can be felt during puncturing, there is obvious feeling when needle penetrates into the vein, and simulated blood flash back indicates correct puncture.