This research provides a critical narrative review of maternal and child health (MCH) in rural Japan, reflecting broader challenges faced by aging societies globally. The study explores the intertwined roles of professional and lay care in sustaining rural communities, emphasizing the unique position of family medicine and primary care in enhancing MCH services. The scarcity of healthcare resources, particularly the shortage of obstetricians and the weakening of traditional community support systems, underscores the challenges in these areas. Our review method involved a comprehensive search of PubMed for articles published from April 2000 to August 2024, focusing on MCH issues in rural Japan. This study highlights several critical gaps in rural MCH provision: the migration of medical professionals to urban centers, the transformation of social structures affecting traditional caregiving, and the lack of specialized MCH training among primary care physicians. We discuss potential solutions such as incentivizing obstetric care in rural areas, integrating MCH education within family medicine curricula, and revitalizing community-based support systems. By addressing these issues, the research aims to formulate actionable strategies to bolster MCH services, thus ensuring better health outcomes and sustainability of rural communities in Japan and similar settings worldwide.