Abstract: Objective To establish techniques to prepare the specimens of the medical mollusks for the purpose of scientific research， teaching and public education. Methods After collection of the mollusks samples， the shell specimens and soft body specimens were prepared in accordance with the standard of making dried specimens and immersed specimens， separately. Results All of specimens prepared based on the method described in the paper meet the basic requirements of the specimens to be used in biological research. The shells and softbody can be preserved for longer time base on the standard of making dried specimens and immersed specimens. Shells are integrated， its colour are hold and no peculiar smell. The softbody can be separated. The structures of softbody can be used for anatomized. Conclusion The specimen prepared by the standard criteria not only can be used for research purpose on molecular biology and morphology， but also can be preserved permanently.

Key words: Specimen, Preparation, Medical mollusk