We proceeded the judgement of Sasang constitution of 79 children(the age 101 between 15) who have visited Dongguk Bundang Oriental Medical Hospital during 3 months from August 2002 to October 2002 by Questionnaire of Sasang Constitution Classification and conducted questionnaire survey about the type of disease and symptom occurred frequently. The conclusion is following. 1. The distribution of Sasang constitution: Soeum group(少陰人) 32, Taeeuml group(太陰人) 29, Soyang group(少陽人) 18. 2. The distribution of systemic disease occurred frequently : in digestive system, Soeum (46.9%) & Soyang(44.4%) group more than Taeeum group(34.5%) and in genitourinary system and others, Soeum(28.1%) more than Taeeum group(17.2%). 3. The distribution of symptom occurred frequently : in rhinitis and sinusitis, Taeeum(60.0%) & Soeum(60.0%) more than Soyang(45.5%), in abdominal pain, Soeum(58.8%) & Soyang(62.5%) more than Taeeum(36.4%), and in diarrhea, Taeeum(45.5%) more than Soeum(123.5%) & Soyang group(25.0%). Headache & vexation(心煩) are almost found in Soeum group with abdominal pain and excessive sweating is only found in Taeeum group. 4. The efficacy of herbal medication combined with Cervix Cornu Pranum (鹿茸加味劑) : after the medication, change of condition have showed in Taeeum group at the most high rate(31.0%) and showed in Soeum(15.6%) and Soyang(11.1%) group. 5. The distribution of allergic disease: allergic rhinitis and atopic dermatitis took up the majority of all allergic diseases. In morbidity of allergic rhinitis, Taeeum(62.1%) & Soyang(55.6%) more than Soeum(37.5%). In morbidity of other allergic diseases and degree of severity, it has no difference among three Sasang constitution groups.