Oral　disorders　are　major　global　health　issues,　affecting　3.5 billion　people　and　imposing　significant　economic　burdens.　This　study　analyzed　the　distribution　and　trends　of　oral　disorder　burden　globally　and　in　China　from　1990　to　2021,　aiming　to　inform　resource　allocation　and　prevention　strategies.　Data　from　the　Global　Burden　of　Disease　(GBD)　2021　database　were　used　to　evaluate　the　incidence,　prevalence,　and　years　lived　with　disability　(YLDs)　of　oral　disorders.　All　statistical　analyses　and　data　visualizations　were　conducted　using　R.　In　2021,　the　burden　of　oral　disorders　in　China　accounted　for　a　significant　proportion　of　the　global　burden.　The　incidence,　prevalence,　and　YLDs　increased　by　15.49%,　52.44%,　and　86.86%　respectively　compared　with　1990.　The　global　burden　also　showed　an　upward　trend　during　the　same　period.　The　relevant　indicators　in　China　are　at　a　relatively　low　level,　and　disparities　were　observed　among　regions　with　different　sociodemographic　indices　(SDI).　Oral　disorder　burden　is　on　the　rise　globally,　with　females,　children,　adolescents,　and　the　elderly　being　the　key　affected　groups.　Regions　with　middle　SDI　bear　a　heavier　burden.　This　study　provides　a　scientific　basis　for　the　formulation　of　relevant　policies　and　emphasizes　the　necessity　of　interventions　for　specific　groups.　©　The　Author(s)　2025.