It is generally accepted that dental procedures can be the causes of dental anxiety, and dental anxiety is described as a significant influence on physical reactions, which may complacate the dental treatment, and there has been much emphasis in the control of it. So it is very useful for dentists to know the degree of anxiety of their patients for the treatment planning and prevention of unexpected emergent state which may be caused by severe anxiety. For the study of the degree of the dental anxiety, 1,041 patients of the Dept. of Oral Diagnosis of S.N.U. hospital and some private clinics were evaluated for dental anxiety by means of dental anxiety scale questionaire. The results were as follows : 1. The mean value of 517 male patients and 524 female patients were are $9.31pm2.76 and 12.01pm2.78$ in respective. 2. There was no significant alteration by age and educational backgrounds. 3. Four male patients and nineteen female patients achieved scores ranging from 17 to 20 which have been known to dental phobics.