diff --git a/common.php b/common.php
index 99765e440..0ba43ce95 100644
--- a/common.php
+++ b/common.php
@@ -227,7 +227,7 @@ if (isset($_REQUEST['sfl']))  {
 
 
 if (isset($_REQUEST['stx']))  { // search text (검색어)
-    $stx = trim($_REQUEST['stx']);
+    $stx = get_search_string(trim($_REQUEST['stx']));
     if ($stx)
         $qstr .= '&stx=' . urlencode(cut_str($stx, 20, ''));
 } else {
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 84fd0b4ad..5c043678f 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2662,6 +2662,26 @@ function conv_date_format($format, $date, $add='')
     return date($format, $timestamp);
 }
 
+// 검색어 특수문자 제거
+function get_search_string($stx)
+{
+    $stx_pattern = array();
+    $stx_pattern[] = '#\.*/+#';
+    $stx_pattern[] = '#\\\*#';
+    $stx_pattern[] = '#\.{2,}#';
+    $stx_pattern[] = '#[/\'\"%=*\#\(\)\|\+\-\&\!\$@~\{\}\[\]`]+#';
+
+    $stx_replace = array();
+    $stx_replace[] = '';
+    $stx_replace[] = '';
+    $stx_replace[] = '.';
+    $stx_replace[] = '';
+
+    $stx = preg_replace($stx_pattern, $stx_replace, $stx);
+
+    return $stx;
+}
+
 // unescape nl 얻기
 function conv_unescape_nl($str)
 {