diff --git a/admin/common-zh-simplified-utf-8.lang.php b/admin/common-zh-simplified-utf-8.lang.php
index 81d0309..cbe0c98 100644
--- a/admin/common-zh-simplified-utf-8.lang.php
+++ b/admin/common-zh-simplified-utf-8.lang.php
@@ -78,6 +78,12 @@ $strings = array(
 		=> '建议参考',
 		'GC'
 		=> 'GC',
+		'Legends:'
+		=> '图例:',
+		'Used Blocks'
+		=> '已用块',
+		'Free Blocks'
+		=> '未用块',
 		'Total'
 		=> '总共',
 		'Cache'
diff --git a/admin/common-zh-traditional-utf-8.lang.php b/admin/common-zh-traditional-utf-8.lang.php
index b9ebaa9..3add7f9 100644
--- a/admin/common-zh-traditional-utf-8.lang.php
+++ b/admin/common-zh-traditional-utf-8.lang.php
@@ -78,6 +78,12 @@ $strings = array(
 		=> '建議參考',
 		'GC'
 		=> 'GC',
+		'Legends:'
+		=> '图例:',
+		'Used Blocks'
+		=> '已用块',
+		'Free Blocks'
+		=> '未用块',
 		'Total'
 		=> '总共',
 		'Cache'
diff --git a/admin/xcache.css b/admin/xcache.css
index c3746b3..8c6952d 100644
--- a/admin/xcache.css
+++ b/admin/xcache.css
@@ -21,7 +21,7 @@ form {margin: 0; padding: 0}
 
 .percent { height: 3px; margin-bottom: 1px; background: gray; border: 1px solid gray; }
 .percent div { float: left; height: 100%; }
-.percent .pvalue { background: limegreen; }
+.pvalue { background: limegreen; }
 
 .blocksgraph { height: 16px; }
 .blocksgraph div { float: left; height: 3px; width: 4px; border: solid gray; border-width: 0 0px 1px 0; }
@@ -39,3 +39,6 @@ form {margin: 0; padding: 0}
 dl { overflow: hidden; }
 dt { font-weight: bold; clear: both; float: left; width: 100px; text-align: right; margin: 0; }
 dd { margin: 0; }
+.blockarea { overflow: hidden; _width: 1px; }
+div.legend { float: left; border: 1px solid gray; font: 12px/12px monospace; }
+div.legendtitle { float: left; padding: 2px; padding-right: 10px; font: 12px/12px monospace; }
diff --git a/admin/xcache.tpl.php b/admin/xcache.tpl.php
index b83fae7..73c5127 100644
--- a/admin/xcache.tpl.php
+++ b/admin/xcache.tpl.php
@@ -130,7 +130,16 @@ EOS;
 	</tr>
 	<?php } ?>
 </table>
-<div style="clear: both">&nbsp;</div>
+<div class="blockarea legends">
+	<div class="legendtitle"><?php echo _T('Legends:'); ?></div>
+	<div class="legend pvalue">&nbsp;&nbsp;</div>
+	<div class="legendtitle"><?php echo _T(isset($free_graph_width) ? '% Free' : '% Used'); ?></div>
+	<div class="legend" style="background: rgb(0,0,255)">&nbsp;&nbsp;</div>
+	<div class="legendtitle"><?php echo _T(isset($free_graph_width) ? 'Free Blocks' : 'Used Blocks'); ?></div>
+	<div class="legend" style="background: rgb(255,0,0)">&nbsp;&nbsp;</div>
+	<div class="legendtitle"><?php echo _T('Hits'); ?></div>
+<div>
+</div>
 <?php
 
 if ($cachelist) {