Functional Characteristics: 1. The anatomical structure is accurate, and the size of human life, there are obvious body surface signs, including: superior sternal notch, sternocleidomastoid muscle, clavicle, right rib. 2. Realistic vascular structure, mainly including: internal jugular vein and subclavian vein, etc. 3. Deep vein intubation: subclavian vein puncture, jugular vein puncture and elbow fossa vein puncture. 4. Intubation practice of cardiac floating (Swan-Ganz) catheter can be performed.