diff --git a/demo/cn/super/fuzzySearch.html b/demo/cn/super/fuzzySearch.html
index 826ee6b96c9ff069d93852a7bf5c1d20e2205c56..aac48cb9d7681d510c22828fe505ebc4bcf61077 100644
--- a/demo/cn/super/fuzzySearch.html
+++ b/demo/cn/super/fuzzySearch.html
@@ -77,7 +77,7 @@
 					fuzzySearch ( zTreeId, searchField, isHighLight, isExpand )
 				</li>
 				<li><p>搜索试试看：<br/>
-						关键字：<input type="text" id="key" value="" class="empty" /><br/>
+						关键字：<input type="text" id="key" value="" class="empty" placeholder="请输入关键字"/><br/>
 					</p>
 				</li>
 				</ul>
diff --git a/demo/en/super/fuzzySearch.html b/demo/en/super/fuzzySearch.html
index c8b3f5a5e8f5e39337fccd9d927d48181379687a..14b3a623b59d37d08d549f64ba6c3509e51cc169 100644
--- a/demo/en/super/fuzzySearch.html
+++ b/demo/en/super/fuzzySearch.html
@@ -77,7 +77,7 @@
 					fuzzySearch ( zTreeId, searchField, isHighLight, isExpand )
 				</li>
 				<li><p>Try to search：<br/>
-						Keywords：<input type="text" id="key" value="" class="empty" /><br/>
+						Keywords：<input type="text" id="key" value="" class="empty"  placeholder="Please Input Keyword"/><br/>
 					</p>
 				</li>
 				</ul>
diff --git a/demo/js/fuzzysearch.js b/demo/js/fuzzysearch.js
index 0d8da16196cd358e90c6030a5a0c171ad20f636b..58396a4d8871fb222fdd3eca6466c12356ac1954 100644
--- a/demo/js/fuzzysearch.js
+++ b/demo/js/fuzzysearch.js
@@ -110,6 +110,7 @@
 	});
 
 	var timeoutId = null;
+  var lastKeyword = '';
 	// excute lazy load once after input change, the last pending task will be cancled  
 	function searchNodeLazy(_keywords) {
 		if (timeoutId) { 
@@ -117,8 +118,12 @@
 			clearTimeout(timeoutId);
 		}
 		timeoutId = setTimeout(function() {
+      if (lastKeyword === _keywords) {
+        return;
+      }
 			ztreeFilter(zTreeObj,_keywords); //lazy load ztreeFilter function 
-			$(searchField).focus();//focus input field again after filtering
+			// $(searchField).focus();//focus input field again after filtering
+      lastKeyword = _keywords;
 		}, 500);
 	}
 }
\ No newline at end of file
diff --git a/log v3.x.txt b/log v3.x.txt
index 11643691e09cd2260c0cca7c33fb9f91ae89272c..be2f2f67aada0117ad5ad96866affedc8562a840 100644
--- a/log v3.x.txt	
+++ b/log v3.x.txt	
@@ -13,6 +13,9 @@
 
 </font>
 
+*2018.12.10* v3.5.37
+   * [修改] fuzzySearch.js & Demo   Thanks @SadWood & @JerryWang24
+
 *2018.08.21* v3.5.37
    * [修改] 替换 scrollIntoViewIfNeeded 方法    Thanks @jocki84
    * [修改] 部分 API 文字错误