diff --git a/packages/language-core/lib/plugins.ts b/packages/language-core/lib/plugins.ts
index 4c7d4ea3c0..29414161fb 100644
--- a/packages/language-core/lib/plugins.ts
+++ b/packages/language-core/lib/plugins.ts
@@ -22,6 +22,7 @@ export function createPlugins(pluginContext: Parameters<VueLanguagePlugin>[0]) {
 		useMdFilePlugin,
 		useHtmlFilePlugin,
 		vueRootTagsPlugin,
+		vueTsx,
 		vueScriptJsPlugin,
 		vueStyleCss,
 		vueTemplateHtmlPlugin,
@@ -31,7 +32,6 @@ export function createPlugins(pluginContext: Parameters<VueLanguagePlugin>[0]) {
 		vueSfcCustomBlocks,
 		vueSfcScriptsFormat,
 		vueSfcTemplate,
-		vueTsx,
 		...pluginContext.vueCompilerOptions.plugins,
 	];
 
diff --git a/packages/language-service/index.ts b/packages/language-service/index.ts
index 6fc96f34d9..d3848d5b90 100644
--- a/packages/language-service/index.ts
+++ b/packages/language-service/index.ts
@@ -51,7 +51,6 @@ export function createVueLanguageServicePlugins(
 		createVueGlobalTypesErrorPlugin(),
 		createVueScopedClassLinksPlugin(),
 		createVueSfcPlugin(),
-		createVueSuggestDefineAssignmentPlugin(),
 		createVueTemplateRefLinksPlugin(),
 		createEmmetPlugin({
 			mappedLanguages: {
@@ -61,6 +60,7 @@ export function createVueLanguageServicePlugins(
 		}),
 
 		// TS related plugins
+		createVueSuggestDefineAssignmentPlugin(ts),
 		createTypeScriptDocCommentTemplatePlugin(ts),
 		createTypeScriptSyntacticPlugin(ts),
 		createVueInlayHintsPlugin(ts),
diff --git a/packages/language-service/lib/plugins/vue-autoinsert-dotvalue.ts b/packages/language-service/lib/plugins/vue-autoinsert-dotvalue.ts
index c86b23c441..f485c1a0f4 100644
--- a/packages/language-service/lib/plugins/vue-autoinsert-dotvalue.ts
+++ b/packages/language-service/lib/plugins/vue-autoinsert-dotvalue.ts
@@ -55,7 +55,7 @@ export function create(
 						if (sourceOffset < startTagEnd || sourceOffset > endTagStart) {
 							continue;
 						}
-						if (isBlacklistNode(ts, ast, sourceOffset - startTagEnd, false)) {
+						if (shouldSkip(ts, ast, sourceOffset - startTagEnd, false)) {
 							return;
 						}
 					}
@@ -86,7 +86,7 @@ function isCharacterTyping(document: TextDocument, change: { text: string; range
 	return charReg.test(lastCharacter) && !charReg.test(nextCharacter);
 }
 
-function isBlacklistNode(ts: typeof import('typescript'), node: ts.Node, pos: number, allowAccessDotValue: boolean) {
+function shouldSkip(ts: typeof import('typescript'), node: ts.Node, pos: number, allowAccessDotValue: boolean) {
 	if (ts.isVariableDeclaration(node) && pos >= node.name.getFullStart() && pos <= node.name.getEnd()) {
 		return true;
 	}
@@ -123,47 +123,48 @@ function isBlacklistNode(ts: typeof import('typescript'), node: ts.Node, pos: nu
 		ts.isCallExpression(node)
 		&& ts.isIdentifier(node.expression)
 		&& isWatchOrUseFunction(node.expression.text)
-		&& isTopLevelArgOrArrayTopLevelItemItem(node)
+		&& isTopLevelArgOrArrayTopLevelItemItem(ts, node, pos)
 	) {
 		return true;
 	}
 	else {
-		let _isBlacklistNode = false;
+		let _shouldSkip = false;
 		node.forEachChild(node => {
-			if (_isBlacklistNode) {
+			if (_shouldSkip) {
 				return;
 			}
 			if (pos >= node.getFullStart() && pos <= node.getEnd()) {
-				if (isBlacklistNode(ts, node, pos, allowAccessDotValue)) {
-					_isBlacklistNode = true;
+				if (shouldSkip(ts, node, pos, allowAccessDotValue)) {
+					_shouldSkip = true;
 				}
 			}
 		});
-		return _isBlacklistNode;
+		return _shouldSkip;
 	}
+}
 
-	function isWatchOrUseFunction(fnName: string) {
-		return fnName === 'watch'
-			|| fnName === 'unref'
-			|| fnName === 'triggerRef'
-			|| fnName === 'isRef'
-			|| hyphenateAttr(fnName).startsWith('use-');
-	}
-	function isTopLevelArgOrArrayTopLevelItemItem(node: ts.CallExpression) {
-		for (const arg of node.arguments) {
-			if (pos >= arg.getFullStart() && pos <= arg.getEnd()) {
-				if (ts.isIdentifier(arg)) {
-					return true;
-				}
-				if (ts.isArrayLiteralExpression(arg)) {
-					for (const el of arg.elements) {
-						if (pos >= el.getFullStart() && pos <= el.getEnd()) {
-							return ts.isIdentifier(el);
-						}
+function isWatchOrUseFunction(fnName: string) {
+	return fnName === 'watch'
+		|| fnName === 'unref'
+		|| fnName === 'triggerRef'
+		|| fnName === 'isRef'
+		|| hyphenateAttr(fnName).startsWith('use-');
+}
+
+function isTopLevelArgOrArrayTopLevelItemItem(ts: typeof import('typescript'), node: ts.CallExpression, pos: number) {
+	for (const arg of node.arguments) {
+		if (pos >= arg.getFullStart() && pos <= arg.getEnd()) {
+			if (ts.isIdentifier(arg)) {
+				return true;
+			}
+			if (ts.isArrayLiteralExpression(arg)) {
+				for (const el of arg.elements) {
+					if (pos >= el.getFullStart() && pos <= el.getEnd()) {
+						return ts.isIdentifier(el);
 					}
 				}
-				return false;
 			}
+			return false;
 		}
 	}
 }
diff --git a/packages/language-service/lib/plugins/vue-suggest-define-assignment.ts b/packages/language-service/lib/plugins/vue-suggest-define-assignment.ts
index 121ae5370e..47d37e6775 100644
--- a/packages/language-service/lib/plugins/vue-suggest-define-assignment.ts
+++ b/packages/language-service/lib/plugins/vue-suggest-define-assignment.ts
@@ -1,8 +1,12 @@
-import type { CompletionItem, CompletionItemKind, LanguageServicePlugin } from '@volar/language-service';
+import type { CompletionItem, CompletionItemKind, LanguageServicePlugin, TextDocument } from '@volar/language-service';
 import { type TextRange, tsCodegen } from '@vue/language-core';
+import type * as ts from 'typescript';
+import { URI } from 'vscode-uri';
 import { resolveEmbeddedCode } from '../utils';
 
-export function create(): LanguageServicePlugin {
+const documentToSourceFile = new WeakMap<TextDocument, ts.SourceFile>();
+
+export function create(ts: typeof import('typescript')): LanguageServicePlugin {
 	return {
 		name: 'vue-suggest-define-assignment',
 		capabilities: {
@@ -11,7 +15,7 @@ export function create(): LanguageServicePlugin {
 		create(context) {
 			return {
 				isAdditionalCompletion: true,
-				async provideCompletionItems(document) {
+				async provideCompletionItems(document, position) {
 					const info = resolveEmbeddedCode(context, document.uri);
 					if (!info?.code.id.startsWith('script_')) {
 						return;
@@ -30,6 +34,11 @@ export function create(): LanguageServicePlugin {
 						return;
 					}
 
+					const sourceFile = getSourceFile(ts, document);
+					if (shouldSkip(ts, sourceFile, document.offsetAt(position))) {
+						return;
+					}
+
 					const result: CompletionItem[] = [];
 					const mappings = [...context.language.maps.forEach(info.code)];
 
@@ -93,3 +102,39 @@ export function create(): LanguageServicePlugin {
 		},
 	};
 }
+
+function shouldSkip(ts: typeof import('typescript'), node: ts.Node, pos: number) {
+	if (ts.isStringLiteral(node) && pos >= node.getFullStart() && pos <= node.getEnd()) {
+		return true;
+	}
+	else if (ts.isTemplateLiteral(node) && pos >= node.getFullStart() && pos <= node.getEnd()) {
+		return true;
+	}
+	else {
+		let _shouldSkip = false;
+		node.forEachChild(node => {
+			if (_shouldSkip) {
+				return;
+			}
+			if (pos >= node.getFullStart() && pos <= node.getEnd()) {
+				if (shouldSkip(ts, node, pos)) {
+					_shouldSkip = true;
+				}
+			}
+		});
+		return _shouldSkip;
+	}
+}
+
+function getSourceFile(ts: typeof import('typescript'), document: TextDocument): ts.SourceFile {
+	let sourceFile = documentToSourceFile.get(document);
+	if (!sourceFile) {
+		sourceFile = ts.createSourceFile(
+			URI.parse(document.uri).path,
+			document.getText(),
+			ts.ScriptTarget.Latest,
+		);
+		documentToSourceFile.set(document, sourceFile);
+	}
+	return sourceFile;
+}