1. Peeling and eviscerating: Cut the abdominal skin with scissors, and be careful not to cut the xiphoid cartilage. Then cut it to both sides and pull down the skin in all directions of the front, back and limbs respectively. Be careful not to break your fingers and toes. Cut the body wall and take out all the internal organs.

2. Muscle removal: gradually remove the body wall and the muscles attached to the bones in order.

3. Degreasing: Soak the bone in 0.5%-0.8% sodium hydroxide solution 1-3 days to remove some muscles that are difficult to remove and remove grease from the bone. In the process of soaking, check frequently to prevent the bones from falling apart. Then take it out and rinse it with clean water.

4. Shaping and mounting: Take a plastic foam board and put the bones on it. During plastic surgery, the posture of the body and limbs is arranged according to the corresponding position of the bones and fixed with pins to avoid deformation when dry. Scattered bones can be bonded with latex.