The study investigates under-five child mortality in Bangladesh, highlighting the interplay of various socioeconomic, demographic, and health factors contributing to child deaths. It notes significant progress in reducing mortality rates from 133 per 1,000 live births in 1990 to 46 in 2014, largely due to improvements in maternal health and public health interventions. The research emphasizes that despite these advances, preventable causes still account for a high number of under-five deaths, necessitating continued efforts to improve child health outcomes.