1. Unique knotting training design, made from transparent materials, and three different types of cylinders constitute various knotting training spaces;
2. Unique magnetic force system to initate different tissue tension;
3. The simulated blood vessel filled with simulative blood is of high resilience, and strong sense of reality while operation and it is easy for replacement;
4. Special groove setting, which is easy to install, replace and carry about;
5. Available to practise knotting methods: knotting with single hand, knotting with both hands, knotting with instruments;
6. Available to practise knot types: single knot, square knot, triple knot and surgical knot, and identification false knot, slip knot;
7. Allow to simulate multiple knotting conditions: knotting in surgical small incision, knotting in deep abdominal cavity and pelvic cavity and angularly knotting in deep large incision, etc.