Probiotics are non-pathogenic living microorganisms and can encourage the growth of other microbes that can benefit the host's health when consumed in sufficient quantities. The aim of this study was to explore the role of probiotics in the management of diarrhea or constipation in children by clarifying their effectiveness, safety and mechanism of action. The type and design of this research is observational analysis with a literature review method. Data was collected from national and international journal publications via scientificdirect.com and pubmed.ncbi.nlm.nih.gov which met the inclusion criteria, namely research examining the role of giving probiotics to children suffering from diarrhea or constipation, research that has been published in the last ten years using data primary and secondary data as well as cross-sectional and cohort research designs. The dependent variable in this study is the outcome of diarrhea or constipation, and the independent variable is probiotics. Data analysis was carried out narratively. This research found that in children suffering from diarrhea, giving probiotics can shorten the duration of diarrhea, especially that caused by rotavirus. On the other hand, in children with constipation, probiotics can increase intestinal motility and shorten transit time so that stool consistency changes and the frequency of defecation increases. There is a relationship between giving probiotics to children and diarrhea or constipation.