diff --git a/src/extension.ts b/src/extension.ts
index 2882b3b..040155b 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -11,6 +11,7 @@ import { FileUtil } from './common/fileUtil';
 const httpExt = require('./bundle/extension');
 
 export function activate(context: vscode.ExtensionContext) {
+	keepOriginDiff();
 	activeHTTP(context)
 	autoClearCacheStorage();
 	const viewOption = { webviewOptions: { retainContextWhenHidden: true, enableFindWidget: true } };
@@ -38,3 +39,14 @@ async function activeHTTP(context: vscode.ExtensionContext) {
 		Output.debug(error)
 	}
 }
+
+function keepOriginDiff() {
+	const config = vscode.workspace.getConfiguration("workbench");
+	const configKey = 'editorAssociations'
+	const editorAssociations = config.get(configKey)
+	const key = '{git,gitlens}:/**/*.{md,csv}'
+	if (!editorAssociations[key]) {
+		editorAssociations[key] = 'default'
+		config.update(configKey, editorAssociations)
+	}
+}
\ No newline at end of file