This is descriptive study conducted to identify educational needs of mothers of nephrotic syndrome patients and the degree of nurses' educational performances perceived by mothers who look after mainly nephrotic syndrome patients. The study subjects were composed of 74 mothers of nephrotic syndrome patients whose children were hospitalized in 2 Pediatric wards of University Hospital in Seoul and 1 in Pusan from Jure in 1996 to January in 1997. A questionnaire for this study was item Kikert type 5 point scale, developed on the basis of previous literature and researcher's clinical experience and the reliability of the used instruments was q=.97. The data analysis was done by SAS. t-test, and ANOVA were done to determine the effect of general characteristics of subjects on their educational needs. Pearson correlation was done to measure relations between general characteristics of subjects and their educational needs and Stepwise Multiple Regression was done to test a variable affecting educational needs. The results were as follows. 1. Mean score of educational needs of subjects was 137.06(Maximum 176). The score of the educational needs of home care was the highest, but the question numbers(of that category) are smaller than others. So, the educational need of the diagnosis and treatment was regarded as the highest in contents. 2. The mean score of nurses' educational performances was very low, 74.91(Maximum 176). Nurse's educational performances score in the diagnosis and treatment of the disease ranked as the highest Burt that score in the care during hoapitalization was the highest in contents as the educational needs was. 3. The number of children excepting the patient(r2=.215289, P=.006)and the age of patient(r2=.23770, P=.001) were emerged as important variables affecting the degree of mother's educational need.