The purpose of this study was to investigate the factors influencing self care in ostomates, to provide the basic data for self care promoting intervention, The subject of this study were 110 ostomates living in Deagu and Deajon, during the period from March to April. 1998. The instruments for this study were the self care scale developed by Lee Ji Sook(1990), the family support scale by Lee Ji Sook(1990), the self esteem scale by Rosenberg(1965) and the hope scale by Nowotny(1989). The instruments for this study were pretested on the ostomates for reliability and validity. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and stepwise multiple regression. The results are as follows : 1. The average score on the self care was 2.90. 2. There were significant positive correlations between self care and other factors self esteem(r=.652 P<.05), family support (r=.632 P<.05) and hope(r= .604 P<.05). 3. The variables that affected the self care of the subjects were self esteem, hope, family support, economical status, fecal control type and monthly participation in ostomate meetings in that order. These variance of self care was R2=62 percent by calculating the sum of those variables. The results of this study might help nurses and other health providers to develop interventions for the self care reinforcement of ostomates.