diff --git a/FO/Views/Account/Join.cshtml b/FO/Views/Account/Join.cshtml
index fe48e52..a3483e2 100644
--- a/FO/Views/Account/Join.cshtml
+++ b/FO/Views/Account/Join.cshtml
@@ -75,7 +75,7 @@ else
                 </li>
                 @*인증완료상태여도 재인증 가능*@
                 <li class="joinId">
-                    <input type="text" id="mobile" class="int nocomma" name="mobile" maxlength="13" placeholder="휴대전화번호" value="@(Model.User.mobile)" )>
+                    <input type="text" id="mobile" class="int nocomma" name="mobile" maxlength="13" placeholder="휴대전화번호" value="@(Model.User.mobile)" readonly="" style="background-color:#ddd;" )>
                     <a href="#" onclick="mobchk();">인증</a>
                 </li>
                 <li>