1, soaking method: invertebrates and fish are soaked in 70 ~ 75% alcohol or 5 ~ 10% formaldehyde (HCHO) solution, or they can be placed in the mixture of them. If the specimen is large, the preservation solution should be injected into the body first.

2, dry method: after killing animals (such as insects, crustaceans, corals, etc.). ), let them do it themselves.

3. Stripping method: This method is applicable to birds, mammals, large fish or reptiles. Peel off the animal's fur or skin, coat the skin with antiseptic, and then restore, fill and shape it to make fur specimens or posture specimens. The fur of large animals can be made into skins for easy storage.

4. Insect erosion method: used to prepare vertebrate bone specimens. Use all kinds of mites to remove muscles from bones.

5. Removal method: When making bone, remove the muscle first, then soak it in corrosive solution (sodium hydroxide or potassium hydroxide), take it out and remove the residual muscle, and finally bleach, reshape and mount it.

6. Complete set production method: the whole small animal (such as protozoa and sponges) or part of it (such as mouthparts and external genitalia) is fixed, dyed, transparent and sealed to make complete sets of pieces, and observed under a microscope.