Abstract: Against the backdrop of the “Healthy China 2030” strategy and the advancement of the “Three Reductions and Three Healthinesses” initiative, the oral health issues of obese children have received significant attention. Research has shown that obese children generally have poorer oral health, with significantly higher rates of dental caries, gingivitis, dental malocclusion, and dental trauma compared to children of normal weight. This paper proposes multidimensional measures to improve oral health in obese children, using the “Three Reductions and Three Healthinesses” as the core framework: “reducing salt, oil, and sugar” can lower the risk of oral diseases at the source, while the coordinated promotion of “oral health, healthy body weight, and bone health” can create synergy between oral and overall health. Future efforts will leverage multidisciplinary collaboration, artificial intelligence, and “Internet Plus” technologies to establish a health education system that integrates communities, schools, and families. Implementing tiered management and targeted prevention will enhance both oral and overall health among obese children, contributing to the strategic goals of “Healthy China”.