Management of Childhood Illness (IMCI) is an integrated and comprehensive approach to health service that focuses on reducing morbidity and mortality under-five children. This study aims to get an overview of IMCI implementation in Indonesia. The research uses a literature review method using a qualitative approach analysis, through a fishbone diagram that includes man, method, machine, material, and money. Articles were searched through databases like Google Scholar, Proquest, Scopus, Science Direct, Biomed Central, and Pubmed, with publication years 2016-2022. The challenges in implementing IMCI reported from the 8 articles were lack of training for IMCI officers; low compliance in both IMCI management and form filling; lack of support including supervision from the health office, financial, facilities, and infrastructure. The percentage coverage of puskesmas that implemented IMCI is quite good. However, there are still many under-five children whom IMCI has not served and its implementation has not been under IMCI guidelines. To improve the IMCI quality, it is necessary to conduct training and regular orientation as well as on-the-job training, supervision, monitoring and evaluation both internally and from the local health office periodically, provision of a support system includes facilities and infrastructure, medicine, and medical consumables.