The purpose of this study was to examine the professional self-concept of dental hygiene students, their satisfaction level with clinical practice and the correlation of the two factors. The subjects in this study were 129 dental hygiene seniors at a college located in the city of J. The selected students had been engaged in a 16-week clinical practice. The findings of the study were as follows: 1. The dental hygiene students investigated got a mean of 3.34 out of possible five points on professional self-concept. As for the subfactors of professional self-concept, they got 3.75, 3.38 and 2.87 respectively on communication, professional work handling and satisfaction level. 2. They got a mean of 3.29 out of possible five points on satisfaction level with clinical practice. As to the subfactors of the satisfaction level, they gave 3.60, 3.50, 3.46, 3.04 and 2.83 to environments for practice, the content of practice, supervision, the length of practice and evaluation respectively. 3. In regard to the relationship of general characteristics to professional self-concept, satisfaction level with the major and social perception of dental hygienist made significant differences to professional self-concept. 4. As for connections between the general characteristics and satisfaction level with clinical practice, satisfaction with clinical practice was significantly different according to satisfaction with the major, satisfaction with the amount of practice and satisfaction with social perception of dental hygienist. 5. There was a significantly positive correlation between professional self-concept and satisfaction level with clinical practice(r=.383, p=.001). In conclusion, how much dental hygienists who are trained to be a dental hygienist are gratified with clinical practice is one of integral factors to affect their development of professional self-concept. Therefore prolonged research efforts should be directed into determining in which way clinical practice should be implemented to develop the professional self-concept of would-be dental hygienists and how to raise their satisfaction with clinical practice.