diff --git a/frontend/components/v2/config-panels/V2TableListConfigPanel.tsx b/frontend/components/v2/config-panels/V2TableListConfigPanel.tsx
index a815b41c..8af58507 100644
--- a/frontend/components/v2/config-panels/V2TableListConfigPanel.tsx
+++ b/frontend/components/v2/config-panels/V2TableListConfigPanel.tsx
@@ -957,7 +957,38 @@ export const V2TableListConfigPanel: React.FC<V2TableListConfigPanelProps> = ({
                                   />
                                   <Link2 className="h-3 w-3 flex-shrink-0 text-primary" />
                                   <span className="truncate text-xs">{column.columnLabel}</span>
-                                  <span className="ml-auto text-[10px] text-primary/80">
+                                  {isAlreadyAdded && (
+                                    <button
+                                      type="button"
+                                      title={
+                                        config.columns?.find((c) => c.columnName === matchingJoinColumn.joinAlias)?.editable === false
+                                          ? "편집 잠금 (클릭하여 해제)"
+                                          : "편집 가능 (클릭하여 잠금)"
+                                      }
+                                      className={cn(
+                                        "ml-auto flex-shrink-0 rounded p-0.5 transition-colors",
+                                        config.columns?.find((c) => c.columnName === matchingJoinColumn.joinAlias)?.editable === false
+                                          ? "text-destructive hover:bg-destructive/10"
+                                          : "text-muted-foreground hover:bg-muted",
+                                      )}
+                                      onClick={(e) => {
+                                        e.stopPropagation();
+                                        const currentCol = config.columns?.find((c) => c.columnName === matchingJoinColumn.joinAlias);
+                                        if (currentCol) {
+                                          updateColumn(matchingJoinColumn.joinAlias, {
+                                            editable: currentCol.editable === false ? undefined : false,
+                                          });
+                                        }
+                                      }}
+                                    >
+                                      {config.columns?.find((c) => c.columnName === matchingJoinColumn.joinAlias)?.editable === false ? (
+                                        <Lock className="h-3 w-3" />
+                                      ) : (
+                                        <Unlock className="h-3 w-3" />
+                                      )}
+                                    </button>
+                                  )}
+                                  <span className={cn("text-[10px] text-primary/80", !isAlreadyAdded && "ml-auto")}>
                                     {column.inputType || column.dataType}
                                   </span>
                                 </div>