<![CDATA[Diarrhea is one of the leading causes of mortality in children under five years of age. Hygienic living behavior plays a crucial role in preventing the transmission of diarrhea. Maternal behavior is closely associated with the prevention and reduction of diarrhea in toddlers. This study aims to describe and determine the relationship between maternal knowledge, attitudes,and personal hygiene practices and the incidence of diarrhea among toddlers at the Cibeureum Public Health Center, South Cimahi, Indonesia. This study employed an analytical crosssectional design. Data were collected from 70 respondents using a consecutive sampling technique. Information was obtained through structured questionnaires. Data analysis was conducted using the chi-square test and Fisher’s exact test. The results showed that the majority of mothers demonstrated good levels of knowledge, positive attitudes, and personal hygiene practices. Accordingly, 81.4% of toddlers were reported to rarely experience diarrhea (p-value = 0.22). Statistical analysis indicated no significant relationship between maternal knowledge, attitudes, and personal hygiene practices and the incidence of diarrhea in toddlers. These findings suggest that multiple factors contribute to the occurrence of diarrhea in toddlers. Nevertheless, adequate knowledge, positive attitudes, and personal hygiene practices remain important preventive measures against diarrhea in this population. DOI: 10.35990/amhs.v4n2.p94-102 REFERENCES Indonesian Pediatric Society (IDAI). Textbook of Gastroenterology–Hepatology. I. Jakarta: Pediatric Gastroenterology–Hepatology Working Group, IDAI; 2009. World Health Organization. The Treatment of Diarrhoea: A Manual for Physicians and Other Senior Health Workers. Geneva: WHO; 2005. World Health Organization. Diarrhoeal disease [Internet]. 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