Abstract: Objective To build an expert system for forensic bones estimation. Methods By using the ob-ject oriented method, employing statistical data of forensic anthropology, combining the statistical dataframe knowledge representation with productions and also using the fuzzy matching and DS evidence the-ory method. Results Software for forensic estimation of sex, age and height with opened knowledge basewas designed. Conclusion This system is reliable and effective ,and it would be a good assistant of theforensic technician.

Key words: expert system, frame, production, object oriented, DS evidence theory, forensic anthropology