diff --git a/resources/hdlParser/index.d.ts b/resources/hdlParser/index.d.ts
index 2028a27..1c2b0f3 100644
--- a/resources/hdlParser/index.d.ts
+++ b/resources/hdlParser/index.d.ts
@@ -1,5 +1,5 @@
-import { RawHdlModule, Macro, RawSymbol } from '../../src/hdlParser/common';
-import { HdlLangID } from '../../src/global/enum';
+import type { RawHdlModule, Macro, RawSymbol, Error } from '../../src/hdlParser/common';
+import type { HdlLangID } from '../../src/global/enum';
 
 type AbsPath = string;
 type RelPath = string;
@@ -15,6 +15,7 @@ interface All {
     content: RawSymbol[]
     languageId: HdlLangID
     macro: Macro
+    error: Error[]
 }
 
 export function vlogFast(path: AbsPath): Promise<Fast | undefined>;
diff --git a/src/function/index.ts b/src/function/index.ts
index 6880638..3570ea1 100644
--- a/src/function/index.ts
+++ b/src/function/index.ts
@@ -11,6 +11,7 @@ import * as lspHover from './lsp/hover';
 import * as lspFormatter from '../../resources/formatter';
 import * as lspTranslator from '../../resources/translator';
 import * as lspDocSemantic from './lsp/docSemantic';
+import * as lspLinter from './lsp/linter';
 
 import * as tool from './tool';
 
@@ -76,11 +77,15 @@ function registerLsp(context: vscode.ExtensionContext) {
     vscode.languages.registerCompletionItemProvider(vlogSelector, lspCompletion.vlogPositionPortProvider, '.');
     vscode.languages.registerCompletionItemProvider(vlogSelector, lspCompletion.vlogCompletionProvider);
     vscode.languages.registerDocumentSemanticTokensProvider(vlogSelector, lspDocSemantic.vlogDocSenmanticProvider, lspDocSemantic.vlogLegend);
+    lspLinter.registerVlogLinterServer();
 
 
     // vhdl lsp
+
+
 }
 
+
 function registerToolCommands(context: vscode.ExtensionContext) {
     vscode.commands.registerCommand('digital-ide.lsp.tool.insertTextToUri', tool.insertTextToUri);
     vscode.commands.registerCommand('digital-ide.lsp.tool.transformOldPropertyFile', tool.transformOldPpy);
diff --git a/src/function/lsp/linter/index.ts b/src/function/lsp/linter/index.ts
new file mode 100644
index 0000000..5957ed0
--- /dev/null
+++ b/src/function/lsp/linter/index.ts
@@ -0,0 +1,5 @@
+import { registerVlogLinterServer } from './vlog';
+
+export {
+    registerVlogLinterServer
+};
\ No newline at end of file
diff --git a/src/function/lsp/linter/vlog.ts b/src/function/lsp/linter/vlog.ts
new file mode 100644
index 0000000..1a1a594
--- /dev/null
+++ b/src/function/lsp/linter/vlog.ts
@@ -0,0 +1,89 @@
+import * as vscode from 'vscode';
+import { All } from '../../../../resources/hdlParser';
+import { hdlParam, HdlSymbol } from '../../../hdlParser';
+import { Position, Range } from '../../../hdlParser/common';
+
+
+class VlogLinter {
+    diagnostic: vscode.DiagnosticCollection;
+    constructor() {
+        this.diagnostic = vscode.languages.createDiagnosticCollection();
+    }
+
+    async lint(document: vscode.TextDocument) {
+        const filePath = document.fileName;
+        const vlogAll = await HdlSymbol.all(filePath);
+        if (vlogAll) {
+            const diagnostics = this.provideDiagnostics(document, vlogAll);
+            this.diagnostic.set(document.uri, diagnostics);
+        }
+    }
+
+    private provideDiagnostics(document: vscode.TextDocument, all: All): vscode.Diagnostic[] {
+        const diagnostics: vscode.Diagnostic[] = [];
+        if (all.error && all.error.length > 0) {
+            for (const hdlError of all.error) {
+                const range = this.makeCorrectRange(document, hdlError.range);
+                const diag = new vscode.Diagnostic(range, hdlError.message, hdlError.severity);
+                diag.source = hdlError.source;
+                diagnostics.push(diag);
+            }
+        }
+        console.log(diagnostics);
+        
+        return diagnostics;
+    }
+
+    private makeCorrectRange(document: vscode.TextDocument, range: Position): vscode.Range {
+        range.line --;
+        if (range.character === 0 && range.line > 0) {
+            range.line --;
+        }
+
+        while (range.line > 0) {
+            const lineContent = document.lineAt(range.line).text;
+            if (lineContent.trim().length > 0) {
+                break;
+            } else {
+                range.line --;
+            }
+        }
+
+        const currentLine = document.lineAt(range.line).text;
+        if (range.character === 0 && currentLine.trim().length > 0) {
+            range.character = currentLine.trimEnd().length;
+        }
+        console.log(range);
+        
+        const position = new vscode.Position(range.line, range.character);
+        const wordRange = document.getWordRangeAtPosition(position, /[`_0-9a-zA-Z]+/);
+        if (wordRange) {
+            return wordRange;
+        } else {
+            const errorEnd = new vscode.Position(range.line, range.character + 1);
+            const errorRange = new vscode.Range(position, errorEnd);
+            return errorRange;
+        }
+    }
+
+    async remove(document: vscode.TextDocument) {
+        this.diagnostic.delete(document.uri);
+    }
+}
+
+function registerVlogLinterServer() {
+    const linter = new VlogLinter();
+    vscode.workspace.onDidOpenTextDocument(doc => {
+        linter.lint(doc);
+    });
+    vscode.workspace.onDidSaveTextDocument(doc => {
+        linter.lint(doc);
+    });
+    vscode.workspace.onDidCloseTextDocument(doc => {
+        linter.remove(doc);
+    });
+}
+
+export {
+    registerVlogLinterServer
+};
\ No newline at end of file
diff --git a/src/hdlParser/common.ts b/src/hdlParser/common.ts
index 00d13af..d6b9b57 100644
--- a/src/hdlParser/common.ts
+++ b/src/hdlParser/common.ts
@@ -78,10 +78,12 @@ enum InstModPathStatus {Current, Include, Others, Unknown};
 // };
 
 interface Error {
-    severity: number
+    severity: vscode.DiagnosticSeverity
     message: string
     source: string
-    range: Range
+    range: Position
+    running_mode?: string
+    running_phase?: string
 };
 
 interface DefineParam {
diff --git a/src/test/user/src/hello.v b/src/test/user/src/hello.v
index c96ec27..eaff86e 100644
--- a/src/test/user/src/hello.v
+++ b/src/test/user/src/hello.v
@@ -8,9 +8,5 @@ module mux2to1(
     );
 
 
-
-
-
     assign outp = sel == 1'b0 ? a : b;
-
 endmodule