diff --git a/extensions/vscode-vue-language-features/package.json b/extensions/vscode-vue-language-features/package.json
index d372c4c4d..d910db8d1 100644
--- a/extensions/vscode-vue-language-features/package.json
+++ b/extensions/vscode-vue-language-features/package.json
@@ -270,6 +270,14 @@
 					"default": false,
 					"description": "Use second server to progress heavy diagnostic works, the main server workhorse computing intellisense, operations such as auto-complete can respond faster. Note that this will lead to more memory usage."
 				},
+				"volar.vueserver.maxOldSpaceSize": {
+					"type": [
+						"number",
+						"null"
+					],
+					"default": null,
+					"description": "Set --max-old-space-size option on server process. If you have problem on frequently \"Request textDocument/** failed.\" error, try setting higher memory(MB) on it."
+				},
 				"volar.codeLens.references": {
 					"type": "boolean",
 					"default": true,
@@ -639,4 +647,4 @@
 		"vscode-languageclient": "^8.0.0-next.14",
 		"vscode-nls": "5.0.0"
 	}
-}
+}
\ No newline at end of file
diff --git a/extensions/vscode-vue-language-features/src/common.ts b/extensions/vscode-vue-language-features/src/common.ts
index 3fcd1655d..9134b1197 100644
--- a/extensions/vscode-vue-language-features/src/common.ts
+++ b/extensions/vscode-vue-language-features/src/common.ts
@@ -95,6 +95,7 @@ async function doActivate(context: vscode.ExtensionContext, createLc: CreateLang
 			{ language: 'vue' },
 		];
 	const _useSecondServer = useSecondServer();
+	const _serverMaxOldSpaceSize = serverMaxOldSpaceSize();
 
 	apiClient = createLc(
 		'volar-language-features',
@@ -121,6 +122,7 @@ async function doActivate(context: vscode.ExtensionContext, createLc: CreateLang
 	const clients = [apiClient, docClient, htmlClient].filter(shared.notEmpty);
 
 	registerUseSecondServerChange();
+	registerServerMaxOldSpaceSizeChange();
 	registerRestartRequest();
 	registerClientRequests();
 
@@ -135,13 +137,27 @@ async function doActivate(context: vscode.ExtensionContext, createLc: CreateLang
 	tsconfig.activate(context, docClient ?? apiClient);
 	doctor.activate(context);
 
-	async function registerUseSecondServerChange() {
+	async function requestReloadVscode() {
+		const reload = await vscode.window.showInformationMessage(
+			'Please reload VSCode to restart language servers.',
+			'Reload Window'
+		);
+		if (reload === undefined) return; // cancel
+		vscode.commands.executeCommand('workbench.action.reloadWindow');
+	}
+	function registerUseSecondServerChange() {
 		vscode.workspace.onDidChangeConfiguration(async () => {
 			const nowUseSecondServer = useSecondServer();
 			if (_useSecondServer !== nowUseSecondServer) {
-				const reload = await vscode.window.showInformationMessage('Please reload VSCode to restart language servers.', 'Reload Window');
-				if (reload === undefined) return; // cancel
-				vscode.commands.executeCommand('workbench.action.reloadWindow');
+				return requestReloadVscode();
+			}
+		});
+	}
+	function registerServerMaxOldSpaceSizeChange() {
+		vscode.workspace.onDidChangeConfiguration(async () => {
+			const nowServerMaxOldSpaceSize = serverMaxOldSpaceSize();
+			if (_serverMaxOldSpaceSize !== nowServerMaxOldSpaceSize) {
+				return requestReloadVscode();
 			}
 		});
 	}
@@ -196,6 +212,10 @@ function useSecondServer() {
 	return !!vscode.workspace.getConfiguration('volar').get<boolean>('vueserver.useSecondServer');
 }
 
+function serverMaxOldSpaceSize() {
+	return vscode.workspace.getConfiguration('volar').get<number | null>('vueserver.maxOldSpaceSize');
+}
+
 function getInitializationOptions(
 	context: vscode.ExtensionContext,
 	mode: 'main-language-features' | 'second-language-features' | 'document-features',
diff --git a/extensions/vscode-vue-language-features/src/nodeClientMain.ts b/extensions/vscode-vue-language-features/src/nodeClientMain.ts
index b2cd51817..4df6fd133 100644
--- a/extensions/vscode-vue-language-features/src/nodeClientMain.ts
+++ b/extensions/vscode-vue-language-features/src/nodeClientMain.ts
@@ -12,9 +12,18 @@ export function activate(context: vscode.ExtensionContext) {
 	) => {
 
 		const serverModule = vscode.Uri.joinPath(context.extensionUri, 'server');
+		const maxOldSpaceSize = vscode.workspace.getConfiguration('volar').get<number | null>('vueserver.maxOldSpaceSize');
+		const runOptions = { execArgv: <string[]>[] };
+		if (maxOldSpaceSize) {
+			runOptions.execArgv.push("--max-old-space-size=" + maxOldSpaceSize);
+		}
 		const debugOptions = { execArgv: ['--nolazy', '--inspect=' + port] };
 		const serverOptions: lsp.ServerOptions = {
-			run: { module: serverModule.fsPath, transport: lsp.TransportKind.ipc },
+			run: {
+				module: serverModule.fsPath,
+				transport: lsp.TransportKind.ipc,
+				options: runOptions
+			},
 			debug: {
 				module: serverModule.fsPath,
 				transport: lsp.TransportKind.ipc,