Diarrhea refers to a condition characterized by mushy or watery stools that occur more frequently than normal with a frequency of at least three times per day in children or toddlers. This disease contributes to morbidity and mortality particularly among children and older adults because their health conditions remain more susceptible to infection caused by various pathogens. The length of hospitalization among children with diarrhea may vary according to several factors including exclusive breastfeeding history nutritional status age and degree of dehydration. This study aimed to examine the relationship between factors associated with the length of hospitalization among toddlers with diarrhea at Roemani Hospital. The research applied an analytical observational approach with a cross sectional design. Researchers selected the study subjects through total sampling and collected data from medical records at Roemani Hospital covering the period from January to December 2023 which included age gender degree of dehydration diarrhea accompanied by mucus and or blood nutritional status and length of hospitalization then analyzed the data using the Chi Square test and logistic regression. The study involved 97 respondents who met the predetermined criteria. The analysis showed that age had a p value of 0.098 while diarrhea accompanied by mucus and or blood had a p value of 0.011 and nutritional status had a p value of 0.203. The degree of dehydration produced a p value of 0.338 which indicated that this variable had no significant association with the length of hospitalization.