Objectives : A study was designed to evaluate the classes of humanities and social sciences in the dental hygiene curriculum. Methods : Data were collected through online received from 69 dental hygiene institutions from May to August, 2011. Categorized are introduction to dental hygiene, dental hygiene management of dental clinic, medical health law, and ethics, patient psychology, others(communication, behavioral science, administration). The data were analyzed by a descriptive analyses and $x^2$-test. Results : As a result of evaluate the classes of humanities and social sciences in the dental hygiene education, 51.4% of a newly-established in between 2000 and 2006 found 2~3 courses. Credits of 4~7 was 82.4% that was found by 2~3 courses. Numbers of courses showed no differences by educational system. In college, 77.8% was in introduction to dental hygiene, dental hygiene management of dental clinic, medical health law. In university, 70.1% was in introduction to dental hygiene, dental hygiene management of dental clinic, medical health law. Ethics and patient psychology was respectively 10.8% in less than 2000, was respectively 4.7% in between 2000 and 2006, was respectively 12.5%, 3.8%. 45.5% that found ethics was in more than 2007. In college, ethics was found in the 1th~2nd(61.5%). In university, ethics was found in the 3rd~4th(85.7%). Conclusions : It should increase the number of courses of humanities and social sciences. Also, It should activate the education a dental hygienist as a professional in the future.