The purpose of this study is to develop a customized parental adaptation promotion program for working parents and to investigate its effects. The study design is nonequivalent control-group pretest-post-test design quasi-experimental research. Among dual-income parents with children betweeen 36 and 72 months old, who met the selection and exclusion criteria in Seoul and Gyeonggi Province were sampled for convenience. The study subjects of the control group were recruited from 3 data collection institutions to 20 pairs(40 people) since June 2019, and conducted 3 surveys. After that, the experimental group was recruited from August 2019 to the experimental group. Off-line and online customized parent adaptation promotion education was provided, and repeated measurements were made after 2 weeks (2nd survey) and 4 weeks (3rd survey) after training. As a result of the study analysis, parenting efficacy was analyzed by ANOVA, and parenting efficacy according to the timing of education (F=8.032, p=.001) showed a significant difference in experimental group. The other variables were not statistically significant. The results of this study suggest that it is necessary to develop an enhancement program that strengthens the emotional intervention based on Transactional Analysis Theory in terms of educational content.