Background: The COVID-19 pandemic has given great momentum in raising public awareness of the importance of clean and healthy living behavior (PHBS). This is because implementing PHBS, including washing hands, maintaining personal hygiene, and the environment, can help prevent the spread of various infectious diseases that are often prone to attack this age group. Aims: The objective of this investigation is to compare the comparison between the implementation of PHBS in early infancy during a pandemic and post-pandemic period. Methods: This research constitutes a descriptive study, characterized by an observational approach that focuses on the implementation of PHBS in early childhood educational settings. It emphasizes the examination of handwashing practices, utilization of health facilities, environmental sanitation, and the accessibility of necessary resources. Result: The comparison of PHBS deployment during and post-pandemic reveals a notable pattern. During the pandemic, the execution of PHBS reached its zenith owing to obligatory health measures. Subsequent to the conclusion of the pandemic, there was a marked decrease in children's commitment to maintaining clean and healthy living practices. The decrease in sanitary facilities impedes the execution of this PHBS. Conclusion: Behaviours promoting cleanliness and health established during the epidemic can be sustained through systematic and sustainable initiatives from both the school and home environments.