This study to find out the causes and degree of anxiety experienced by hospitalized patients, with the objective of instituting improvement of Nursing care program based on the needs of patients. The present study was carry out from July 1 , 1975 to October 10, 1975 with 168 patients random sampling from those admitted of Kyung Hee Medical Center. The Questionnaire form included 47 questions which are considered to be anxiety events for admitted patients and was divided into four areas namely, such events related to 1) hospital environment, 2) Psychology and emotion, 3) Nursing care and treatment, and 4 )Education. The results of the study were as follows : 1) Most of the respondents (70.09%) felt uneasy about their disease affected by the behaviors of medical personnel. 2) Regarding the correlation between anxiety felt by patients and their educational level. Only 9 sub- items of 47 items showed significant difference. 3) There was revealed no particular significance in the correlation between anxiety felt by patients and period of hospitalization. 4) Only 5 sub- items out of 47 items showed significant difference ill the correlation between anxiety felt by patients and previous experience of operation. 5) Only 3 sub-items out of 47 items showed signigicant difference in the correlation between anxiety felt day patients and previous experience of hospitalization. 6) Regarding the extent of anxiety felt by patients, "insufficient explanation about meals" showed the highest score followed. "The visit of physicians and Nurses to the patient is too frequent " showed the lowest score and "Nurses change too frequently the physical posture of patients" followed.