The purpose of this study is to explore how the metacognitive skills influences the process of counselors’ case conceptualization, and further analyze the conditions and differences between experienced counselors and novice counselors in a counseling process. By interviewing two experts and two novice counselors, we can better understand how metacognitive skills influence case conceptualization process. Furthermore, we can summarize its sequence of ideas as well as its principles to provide future counselors better reference-frameworks in order to promote counseling quality. This study uses the in-depth interviews and semi-structured guideline to interview the counselors; using the checking list of case conceptualization, interview summary, and classification system of metacognition as research tools; analyze and sum up by open-code method. The results are as below:
1. Knowledge schema influences difference in self-connection.
2. In subject-connection, expert counselors’ self-connecting are more quickly, exquisitely, correctly and diversely than novice counselors’.
3. Both experts and novice counselors are able to aware how different situations and personalities influence counseling, however, the focus is different.
4. In the self-selecting system, experts are better than novice counselors because novice counselors are easily affected by the supervisions.
5. Expert counselors provide better self-monitoring. In contrast, novice counselors are sometimes tense and easily disturbed by trivial information.
6. Expert counselors can achieve processing goals by self-planning according to the available information. In contrast, novice counselors can’t.
7. Expert counselors are able to revise the assumptions, targets and strategies of counseling cases according to different situations. In contrast, novice counselors do it less.
8. Expert counselors never consciously aware that they are using the metacognitive skills. However, novice counselors can aware, when they are using it .because they have learned it.
9. Novice counselors feel that they are supervised after interviews while experts do not.
Finally, based on the results of this research, the researcher offers some recommendations as reference materials for both counseling practice and future studies.