A study on the impertance of fifty selected nursing activities that classified into four categories of patient care (physical care, psychosocial aspects of care, observing, reporting and implementing unedical care, care for admission and discharge) w.s carried out from September 25 to October 10, 1973 toward 300 hospitalized patients and 300 professional nurses in four university hospitals in Seoul. The resultse were obtained as follows. The importance score in order on four categories of nursing activities were seen as follows : 1. in physical care activities patients noted ; moderately important 35.0% extremely important 20.5% very important 19.3% slightly important 18.6% not at all important 6.6% nurses noted : moderateiy important 41. 5% very important 29.4% extremely important 23.5% slightly important 6,2% not at all important 3.4% 2. in activities involving psychosocial aspects of care patients noted ; moderately important 33.4% very important 25.2% extremsly important 23.2% slightly important 14.3% not at all important 3. 9% nurses noted ; moderately important 42.3% very important 34.8% extremely important 16.0% slightly important 6.2% not at all important 0.7% 3. in activities involving observing, reporting, and implementing medical care patients noted; extremely important 35. 9.% moderately important 28.0% very important 26.0% slightly important 8.4% not at all important 1.1% nurses noted ; extremely important 33.1% very important 31.8% moderately important 26.1% slightly important 3.6% not at all important 0.4% 4. in activities preparing for admission and discharge patients noted ; moderately important 35.8% extremely important 24.5% very important 23.5% slightly important 12.5% not at all important 3.7% nurses noted ; moderately important 47.6% very important 33.1% extremely important 12.5% slightly important 6.0% not at all important 0.8%.