diff --git a/bbs/qawrite_update.php b/bbs/qawrite_update.php
index 396080891..c6fde25d5 100644
--- a/bbs/qawrite_update.php
+++ b/bbs/qawrite_update.php
@@ -33,6 +33,9 @@ if (!empty($msg)) {
     alert($msg);
 }
 
+if($qa_hp)
+    $qa_hp = preg_replace('/[^0-9\-]/', '', strip_tags($qa_hp));
+
 // 090710
 if (substr_count($qa_content, '&#') > 50) {
     alert('내용에 올바르지 않은 코드가 다수 포함되어 있습니다.');
diff --git a/mobile/skin/qa/basic/write.skin.php b/mobile/skin/qa/basic/write.skin.php
index c7fa1e568..afd1a6ef4 100644
--- a/mobile/skin/qa/basic/write.skin.php
+++ b/mobile/skin/qa/basic/write.skin.php
@@ -63,7 +63,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
         <tr>
             <th scope="row"><label for="qa_hp">휴대폰</label></th>
             <td>
-                <input type="text" name="qa_hp" value="<?php echo $write['qa_hp']; ?>" id="qa_hp" <?php echo $req_hp; ?> class="<?php echo $req_email.' '; ?>frm_input" size="30">
+                <input type="text" name="qa_hp" value="<?php echo $write['qa_hp']; ?>" id="qa_hp" <?php echo $req_hp; ?> class="<?php echo $req_hp.' '; ?>frm_input" size="30">
                 <?php if($qaconfig['qa_use_sms']) { ?>
                 <input type="checkbox" name="qa_sms_recv" value="1" <?php if($write['qa_sms_recv']) echo 'checked="checked"'; ?>> 답변등록 SMS알림 수신
                 <?php } ?>
@@ -166,6 +166,14 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
             return false;
         }
 
+        <?php if ($is_hp) { ?>
+        var hp = f.qa_hp.value.replace(/[0-9\-]/g, "");
+        if(hp.length > 0) {
+            alert("휴대폰번호는 숫자, - 으로만 입력해 주십시오.");
+            return false;
+        }
+        <?php } ?>
+
         document.getElementById("btn_submit").disabled = "disabled";
 
         return true;
diff --git a/skin/qa/basic/write.skin.php b/skin/qa/basic/write.skin.php
index 817e8f943..e34181369 100644
--- a/skin/qa/basic/write.skin.php
+++ b/skin/qa/basic/write.skin.php
@@ -63,7 +63,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
         <tr>
             <th scope="row"><label for="qa_hp">휴대폰</label></th>
             <td>
-                <input type="text" name="qa_hp" value="<?php echo $write['qa_hp']; ?>" id="qa_hp" <?php echo $req_hp; ?> class="<?php echo $req_email.' '; ?>frm_input" size="30">
+                <input type="text" name="qa_hp" value="<?php echo $write['qa_hp']; ?>" id="qa_hp" <?php echo $req_hp; ?> class="<?php echo $req_hp.' '; ?>frm_input" size="30">
                 <?php if($qaconfig['qa_use_sms']) { ?>
                 <input type="checkbox" name="qa_sms_recv" value="1" <?php if($write['qa_sms_recv']) echo 'checked="checked"'; ?>> 답변등록 SMS알림 수신
                 <?php } ?>
@@ -166,6 +166,14 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
             return false;
         }
 
+        <?php if ($is_hp) { ?>
+        var hp = f.qa_hp.value.replace(/[0-9\-]/g, "");
+        if(hp.length > 0) {
+            alert("휴대폰번호는 숫자, - 으로만 입력해 주십시오.");
+            return false;
+        }
+        <?php } ?>
+
         document.getElementById("btn_submit").disabled = "disabled";
 
         return true;