The purposes of this study were to explore the case conceptualization ability difference between counselors in training. In this study, two raters rating 69 participants' performance. The major findings were as follows: 1.Counselors' case conceptualization abilities are significant between different learning levels. The doctoral counselors' case conceptualization abilities are higher than those of undergraduate and graduate level counselors are. 2.The counselors' case conceptualization abilities grow as their training grow. The undergraduate counselors' case conceptualization abilities were lower than the graduate counselors' were, and the graduate counselors’ case conceptualization abilities were lower than doctoral counselors’ were. But the developmental speed is not smoothly. According to the findings and the limitations of the study, suggestions for the future research and counselor education were discussed.
