Abstract: The study was designed to construct assessment scale of criminal reform effectiveness in the Chinese prison by factor analysis. The scale is divided into two versions. One is A version assessment scale by the police, another is B version assessment scale by the criminal. The results showed that: (1) the constructed inventory has good reliability and validity; (2) the three factors of assessment of reform effectiveness has reasonable factor structure and clear content.

Key words: criminal, assessment of reform effectiveness, attitude of reform