The investigators conducted this survey to find out prevalence of diseases and symptoms of the 812 nurses who were working at the 12 Seoul city and University' s hospital in Seoul by retrospective study The results of yurvoy were summarized as follows: I. Distribution of Prevalence Rate of Diseases and Symptoms. 1) An average prevalence rate of diseases and Symptoms of the nurses/100 persons was 64.3 cases at present October 1.1972 2) The total number of diseases and Symgtoms was 522 cases at present Oct, 1 1972 for the surveyd nurses. The prevalence rate of following diseases/100 persons were as , foot sore-11,3. myopia-9. 7, neuralgia-9. 6, anemia-9.1, insomnia-8.6 cases and the corrected number percent of prevalence rate of disesses and symptoms of the above diseases into 100 denominator were as follows; foot sore-17. 6%, myopia-15.4%, neuralgia-14. 9%, anemia-14. 2% insomnia-13. 2%. 3) The prevalence rate of diseases and symptoms/100 person for the age group of 45 and over was 140, 0 cases and the age of 35-39 years was 27. 3 cases. 4) The prevalence rate of diseases and symptoms/100 persons by the rotation system of nurses' duty/day were as follows; two shift system rotation-86. 7 cases, three shift system rotation-67. 9 cases and day duty ony was 56. 2 cases. 5) The prevalence rate of diseases and symptoms/100 person by the basic nursing education background seemed to be lower occurance against to the higher education and it was 9 4.4 cases at the Technical Nursing High School graduates. 6) The prevalence rate of diseases and symptoms/100 persons by the marital status of the nurses were as follows; single-64. 8 cases, married-48. 7 cases, and widowed-28. 6 cases. II. Relationship Between working Experience and prevalence of the Disease and symptoms. 1) There were no relationship by statistical test between prevalence of eye disease and experience at the eye ward(p)0. 05), skin disease and experience at the dermatology ward (p}0.05), foot sore and experience at the operating room (p)0. 05), varicos vein and experi ence at the operating room(p)0. 05), sore finger and experience at the central supply room (p)0.05), infectious disease and experience at the isolation ward(p}0. 05). 2) There was significant relationship by statistical lest between pulmonary tuberculosis and experience at the tuberculosis ward. (P<0.05) Prevalence of pulmonary tuberculosis was five times in experienced group than non experienced group.