diff --git a/crates/emmylua_ls/src/handlers/initialized/locale.rs b/crates/emmylua_ls/src/handlers/initialized/locale.rs
index 2952f1539..dfdbbd235 100644
--- a/crates/emmylua_ls/src/handlers/initialized/locale.rs
+++ b/crates/emmylua_ls/src/handlers/initialized/locale.rs
@@ -2,7 +2,15 @@ use log::info;
 use lsp_types::InitializeParams;
 
 pub fn set_ls_locale(params: &InitializeParams) -> Option<()> {
-    let locale: String = params.locale.clone()?;
+    let mut locale: String = params.locale.clone()?;
+
+    // 如果传递的`locale`包含`-`, 则转换为`_`且后面的字母大写
+    if locale.contains("-") {
+        let parts = locale.split("-").collect::<Vec<&str>>();
+        if parts.len() == 2 {
+            locale = format!("{}_{}", parts[0], parts[1].to_uppercase());
+        }
+    }
 
     info!("set locale: {}", locale);
     emmylua_parser::set_locale(&locale);