The purpose of this study was to investigate the relationship with self-efficacy and social support and organizational commitment of kindergarten and child care teachers. The subjects were 257 kindergarten and child care teachers. The data were analyzed by Path Analysis, Multiple Regression(using SPSS 15.0 and Amos 6.0). Major findings were as follows: (1) The self-efficacy was significantly associated with organizational commitment of kindergarten and child care teachers. And social support was significantly associated with organizational commitment of kindergarten and child care teachers. (2) The self-efficacy was significantly associated with social support of kindergarten and child care teachers (3) The self-efficacy was not significantly associated with organizational commitment of kindergarten and child care teachers, controlled by social support. That result showed the social support was more important variable affecting organizational commitment of kindergarten and child care teachers than the self-efficacy.