Objectives: This study was done to identify the relationship between the family function and parenting attitudes of parents with preschool children. Methods: The study subjects were 190 fathers and 190 mothers of preschool children. They enrolled the Academy of Continuing Education at C University in G city. Schaefer's Maternal Behavior Research Instrument (MBRI) for parenting attitudes and Smilkstein's Family APGAR for family function were used to collect data from May to December, 2008. Data were analyzed by t-test, ANOVA, Pearson's correlation coefficient, Duncantest using, and Stepwise Multiple Regression Analysis the SAS Program 12.0 program. Results: The mean (±SD) Family APGAR score was 6.60 (±2.19) and the mean (±SD) MBRI score was 3.22 (±0.29). There was positive relationship between the family function and parenting attitudes of parents. Parenting attitudes according to children's temperament and family function showed significant difference. The results of stepwise multiple regression analysis showed that only parenting attitudes was significantly associated with family function(β=.708, p<.001). Conclusions: The findings of the study indicated family function was associated with parenting attitudes of parents with preschool children. Accordingly, when caring for parents nurses should heed to their family function and know that it may have effect on parenting attitudes. Parent coaching program for promoting family function and parenting attitudes needs to be developed to make children's temperament more desirable.