Background:: The purpose of this study was to identify the contributing factors of unmet healthcare needs of pregnant and breast feeding women.

Methods:: This study used raw data from the Korea Community Health Survey(KCHS) which was performed in 2015. Data was analyzed using SPSS 21.0 for descriptive statistics, t test, Chi-square test, and logistic regression.

Results:: The significant predictors related to unmet healthcare needs were low level of education, not employed, low income, depression, eat breakfast, sleep duration, low level of subjective health status, and high level of stress.

Conclusions:: The results of the study indicate that it is necessary to establish a mental health care program to decrease unmet healthcare needs of pregnant and breast feeding women.