diff --git a/.github/workflows/validate_pr.yml b/.github/workflows/validate_pr.yml
index 0719ca2e3d..57e8c12b5e 100644
--- a/.github/workflows/validate_pr.yml
+++ b/.github/workflows/validate_pr.yml
@@ -8,10 +8,15 @@ jobs:
   validate-pr:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       - name: Check PR Title Format
         uses: actions/github-script@v7
         with:
           script: |
+            const fs = require('fs');
+            const path = require('path');
             const prTitle = context.payload.pull_request.title;
             const titleRegex = /^([\w\s,{}/.]+): .+/;
             
@@ -19,5 +24,21 @@ jobs:
               core.setFailed(`PR title "${prTitle}" does not match required format: directory, ...: description`);
               return;
             }
+
+            const match = prTitle.match(titleRegex);
+            const dirPart = match[1];
+            const directories = dirPart.split(',').map(d => d.trim());
+            const missingDirs = [];
+            for (const dir of directories) {
+              const fullPath = path.join(process.env.GITHUB_WORKSPACE, dir);
+              if (!fs.existsSync(fullPath)) {
+                missingDirs.push(dir);
+              }
+            }
+            
+            if (missingDirs.length > 0) {
+              core.setFailed(`The following directories in the PR title do not exist: ${missingDirs.join(', ')}`);
+              return;
+            }
             
             console.log('✅ PR title format is valid');