diff --git a/src/function/sim/simulate.ts b/src/function/sim/simulate.ts
index 4c4e511..47d4d26 100644
--- a/src/function/sim/simulate.ts
+++ b/src/function/sim/simulate.ts
@@ -90,7 +90,8 @@ class Simulate {
         const setting = vscode.workspace.getConfiguration();
 
         // make simulation dir
-        const defaultSimulationDir = hdlPath.join(opeParam.prjInfo.arch.prjPath, 'icarus');
+        const defaultSimulationDir = hdlPath.join(opeParam.prjInfo.prjPath, 'icarus');
+        
         simConfig.simulationHome = setting.get('digital-ide.function.simulate.simulationHome', '');
         if (!fs.existsSync(simConfig.simulationHome)) {
             simConfig.simulationHome = defaultSimulationDir;
diff --git a/src/global/prjInfo.ts b/src/global/prjInfo.ts
index f19bbec..98dbe46 100644
--- a/src/global/prjInfo.ts
+++ b/src/global/prjInfo.ts
@@ -652,6 +652,17 @@ class PrjInfo implements PrjInfoMeta {
         return hdlPath.join(extensionPath, 'library');
     }
 
+    /**
+     * @description 获取 prjPath
+     */
+    public get prjPath(): AbsPath {
+        const prjPath = this.arch.prjPath;
+        if (prjPath === undefined || prjPath.length === 0) {
+            return this._workspacePath;
+        }
+        return prjPath;
+    }
+
     public json(): RawPrjInfo {
         return {
             toolChain: this._toolChain,
diff --git a/src/monitor/hdl.ts b/src/monitor/hdl.ts
index 33b70b8..66093c5 100644
--- a/src/monitor/hdl.ts
+++ b/src/monitor/hdl.ts
@@ -154,7 +154,7 @@ export class HdlAction extends BaseAction {
     private isvalid(path: AbsPath): boolean {
         const prjInfo = opeParam.prjInfo;
         if (path.startsWith(prjInfo.hardwareSrcPath) || path.startsWith(prjInfo.hardwareSimPath)) {
-            if (!hdlIgnore.isignore(path)) {
+            if (!hdlIgnore.isignore(path) && hdlFile.isHDLFile(path)) {
                 return true;
             }
         }