BackgroundMaternal mental health conditions within the postnatal period can have long-lasting consequences on a child’s well-being. This study synthesises current evidence on the association between postnatal maternal mental health-related hospitalisation (MHrH) and adverse child health and maltreatment outcomes.MethodsWe conducted an inclusive search across multiple databases, including MEDLINE, PsycINFO, CINAHL, Scopus, Embase, Google Scholar, and the reference list of eligible papers. Studies