diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab.ts b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
index 8f20784f8..9e4ff7788 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
@@ -167,6 +167,7 @@ export async function mountM01LogicLab(
     const n = Object.keys(drafts).length;
     pending.textContent = n ? tx("Bar_Pending", { n }) : "";
     saveButton.disabled = discardButton.disabled = n === 0;
+    saveButton.hidden = discardButton.hidden = n === 0; // 저장 안 한 고친 것이 없으면 숨김
   };
 
   const touch = (): void => {
diff --git a/M01_MasterData/M01_MasterData_UI_Page.ts b/M01_MasterData/M01_MasterData_UI_Page.ts
index 6b0b3a9e6..26525e3d2 100644
--- a/M01_MasterData/M01_MasterData_UI_Page.ts
+++ b/M01_MasterData/M01_MasterData_UI_Page.ts
@@ -96,6 +96,7 @@ function buildPage(): HTMLElement {
     const n = totalCount();
     summary.textContent = n ? L("M01_Changed").replace("{value}", String(n)) : "";
     save.disabled = drop.disabled = n === 0;
+    save.hidden = drop.hidden = n === 0; // 저장 안 한 고친 것이 없으면 숨김
   };
   onDraftChange(refreshBar);
   refreshBar();