Purpose: The purpose of this study was to identify the effect of predictive factors related to family strength and develop a structuralequation model that explains family strength among married working women. Methods: A hypothesized model was developed basedon literature reviews and predictors of family strength by Yoo. This constructed model was built of an eight pathway form. Two exogenousvariables included in this model were ego-resilience and family support. Three endogenous variables included in this modelwere functional couple communication, family stress and family strength. Data were collected using a self-report questionnaire from319 married working women who were 30~40 of age and lived in cities of Chungnam province in Korea. Data were analyzed withPASW/WIN 18.0 and AMOS 18.0 programs. Results: Family support had a positive direct, indirect and total effect on family strength. Family stress had a negative direct, indirect and total effect on family strength. Functional couple communication had a positive directand total effect on family strength. These predictive variables of family strength explained 61.8% of model. Conclusion: The resultsof the study show a structural equation model for family strength of married working women and that predicting factors forfamily strength are family support, family stress, and functional couple communication. To improve family strength of married workingwomen, the results of this study suggest nursing access and mediative programs to improve family support and functional couplecommunication, and reduce family stress.