This study sought to verify the mediating effects of self-compassion between the counselor s development level, and the counselor s negative experiences and the counselor s level of development. For this purpose, we surveyed 193 counselors who are conducting counseling in the whole country. Research tools were used to measure a counselor s negative experiences, self-compassion, and the counselor s level of development with self-reporting questionnaires. The mediating effect of self-compassion on the relationship between negative experiences and Development Level of the counselor s was verified by the three-step analysis of Baron and Kenny(1986), and the significance was tested by Sobel(1982). The results of the study are as follows. First, the relationship between counselor s negative experiences and self-compassion and counselor s Development Level showed a significant negative correlation. And self-compassion and counselor s Development Level of counselors showed positive significant correlation. Second, in relation to the counselor s negative experiences and the counselor s level of development, self-compassion has been proven to have partial mediation effects. Finally, we discussed the implications, limitations and suggestions for further research of this study, while presenting the importance of the impact of counselors self-compassion on the level of counselor s development at the consultation site.