diff --git a/app/static/js/highlight.js b/app/static/js/highlight.js
index e776bb3..d75dace 100644
--- a/app/static/js/highlight.js
+++ b/app/static/js/highlight.js
@@ -22,6 +22,7 @@ function getWord() {
 
 function highLight() {
     if (!isHighlight) return;
+    let word = (getWord() + "").trim();
     let articleContent = document.getElementById("article").innerHTML; // innerHTML保留HTML标签来保持部分格式，且适配不同的浏览器
     let pickedWords = document.getElementById("selected-words");  // words picked to the text area
     let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
@@ -45,13 +46,23 @@ function highLight() {
     let totalSet = new Set();
     for (let i = 0; i < list.length; ++i) {
         list[i] = list[i].replace(/(^\W*)|(\W*$)/g, ""); // 消除单词两边的非单词字符
-        if (list[i] != "" && !totalSet.has(list[i])) {
+        list[i] = list[i].replace('|', "");
+        list[i] = list[i].replace('?', "");
+        if (list[i] != "" && !totalSet.has(list[i]) && "<mark>".indexOf(list[i]) === -1 && "</mark>".indexOf(list[i]) === -1) {
             // 返回所有匹配单词的集合, 正则表达式RegExp()中, "\b"匹配一个单词的边界, g 表示全局匹配, i 表示对大小写不敏感。
             let matches = new Set(articleContent.match(new RegExp("\\b" + list[i] + "\\b", "gi")));
+            let articleContent_fb = articleContent;  //文章副本
             if (matches.has("mark")) {
                 // 优先处理单词为 "mark" 的情况
                 totalSet = new Set(["mark", ...totalSet]);
             }
+            while(articleContent_fb.toLowerCase().indexOf(list[i].toLowerCase()) !== -1 && list[i]!=""){
+                //找到副本中和list[i]匹配的第一个单词(第一种匹配情况),并赋值给list[i]。
+                const index = articleContent_fb.toLowerCase().indexOf(list[i].toLowerCase());
+                list[i] = articleContent_fb.substring(index, index + list[i].length);
+                articleContent_fb = articleContent_fb.substring(index + list[i].length);    // 使用副本中list[i]之后的子串替换掉副本
+                articleContent = articleContent.replace(new RegExp("\\b"+list[i]+"\\b","g"),"<mark>" + list[i] + "</mark>");
+            }
             totalSet = new Set([...totalSet, ...matches]);
         }
     }
diff --git a/app/templates/userpage_get.html b/app/templates/userpage_get.html
index edb8bf2..57461c1 100644
--- a/app/templates/userpage_get.html
+++ b/app/templates/userpage_get.html
@@ -291,7 +291,7 @@
 </body>
 <style>
     mark {
-        color: #{{ yml['highlight']['color'] }};
+        color: red;
         background-color: rgba(0, 0, 0, 0);
     }
 </style>
diff --git a/app/test/test_bug545_HuangHuiLing.py b/app/test/test_bug545_HuangHuiLing.py
new file mode 100644
index 0000000..bff8c13
--- /dev/null
+++ b/app/test/test_bug545_HuangHuiLing.py
@@ -0,0 +1,74 @@
+import random
+import string
+import time
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.support import expected_conditions as EC
+from selenium.webdriver.common.action_chains import ActionChains
+
+from helper import signup
+
+
+def has_punctuation(s):
+    return any(c in string.punctuation for c in s)
+
+
+def select(driver):
+    text_element = driver.find_element(By.ID, 'article')
+
+    # 创建ActionChains对象
+    actions = ActionChains(driver)
+
+    # 模拟鼠标移动到文本元素上
+    actions.move_to_element(text_element)
+
+    # 模拟鼠标按下并拖动以选择文本
+    # 假设我们想要选择从第10个字符开始的5个字符
+    actions.click()
+    actions.perform()
+    time.sleep(5)
+    # 找到包含要选择文字的元素
+    text_element = driver.find_element(By.ID, 'article_title')
+
+    # 创建ActionChains对象
+    actions = ActionChains(driver)
+
+    # 模拟鼠标移动到文本元素上
+    actions.move_to_element(text_element)
+
+    # 模拟鼠标按下并拖动以选择文本
+    # 假设我们想要选择从第10个字符开始的5个字符
+    actions.double_click()
+    actions.perform()
+    #actions.move_by_offset(100, 0)
+    #actions.move_by_offset(10, 0)
+    actions.release()             # 释放鼠标按钮
+
+def test_selected_second_word(driver, URL):
+    try:
+        username, password = signup(URL, driver)
+        # 找到包含要选择文字的元素
+        text_element = driver.find_element(By.ID, 'article_title')
+
+        # 创建ActionChains对象
+        actions = ActionChains(driver)
+
+        # 模拟鼠标移动到文本元素上
+        actions.move_to_element(text_element)
+
+        # 模拟鼠标按下并拖动以选择文本
+        # 假设我们想要选择从第10个字符开始的5个字符
+        actions.double_click()
+        actions.perform()
+        #actions.move_by_offset(10, 0)
+
+        # 获取选中的文本
+        selected_words = driver.find_element(By.ID, 'selected-words').get_attribute('value')
+        assert selected_words != "","选中单词被放置框中"
+        #再次选取
+        select(driver)
+        time.sleep(6)
+        selected_second_words = driver.find_element(By.ID, 'selected-words').get_attribute('value')
+        assert selected_second_words.strip() == "", "选中的单词被删除"
+    finally:
+        driver.quit()