The purpose of this study is to sketch unconscious biases that affect women and mothers. As a result of this study, the following points become clear: (1) Unconscious biases also inform social norms and roles in women’s dress and makeup. Women accept them unconsciously. (2) The unconscious bias that “childcare is the responsibility of women” is still strong today. Therefore, mothers tend to feel guilt about their children. Mothers also hesitate to leave their children at daycare as a rest for themselves. (3) The unconscious bias that “childcareis the responsibility of women” causes various forms of maternal guilt. However, previous studies have not shown that mothers who work have a negative effect on their children’s development. These unconscious biases have been created by the social environment and culture and have an impact on the formation of our values and stereotypes. We need to think about the issues that women and mothers face by recognizing our unconscious biases.