diff --git a/Readme.md b/Readme.md
new file mode 100644
index 0000000..596df6f
--- /dev/null
+++ b/Readme.md
@@ -0,0 +1,5 @@
+Click the Familiar or Unfamiliar button (current word frequency>1), the current word position is displayed at the top of the page;
+
+Click the Familiar or Unfamiliar button (current word frequency is 1), and the page will be displayed as the top of the entire page.
+
+Demo video link: https://b23.tv/QuB77m
\ No newline at end of file
diff --git a/app/main.py b/app/main.py
index f35b65c..6053266 100644
--- a/app/main.py
+++ b/app/main.py
@@ -274,12 +274,14 @@ def user_mark_word(username):
 def unfamiliar(username,word):
     user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
     pickle_idea.unfamiliar(user_freq_record,word)
+    session['thisWord'] = word  # 1. put a word into session
     return redirect(url_for('userpage', username=username))
 
 @app.route("/<username>/<word>/familiar", methods=['GET', 'POST'])
 def familiar(username,word):
     user_freq_record = path_prefix + 'static/frequency/' + 'frequency_%s.pickle' % (username)
     pickle_idea.familiar(user_freq_record,word)
+    session['thisWord'] = word  # 1. put a word into session
     return redirect(url_for('userpage', username=username))
 
 @app.route("/<username>/<word>/del", methods=['GET', 'POST'])
@@ -349,7 +351,13 @@ def userpage(username):
                    document.getElementById("text-content").addEventListener("touchstart", fillinWord, false);
                  </script>
                  '''
-        
+        if session.get('thisWord'):
+            page += '''
+                   <script type="text/javascript">
+                       location.href = "#aaa"  // 2. define a anchor URL and point to the anchor in the page whose id is aaa
+                   </script> 
+                   '''
+
         d = load_freq_history(user_freq_record)
         if len(d) > 0:
             page += '<p><b>我的生词簿</b></p>'
@@ -360,6 +368,8 @@ def userpage(username):
             for x in sort_in_descending_order(lst2):
                 word = x[0]
                 freq = x[1]
+                if session.get('thisWord') == x[0]:
+                    page += '<a name="aaa"></a>'    # 3. anchor
                 if isinstance(d[word], list): # d[word] is a list of dates
                     if freq > 1:
                         page += '<p class="new-word"> <a href="%s">%s</a>(<a title="%s">%d</a>) <a href="%s/%s/familiar">熟悉</a> <a href="%s/%s/unfamiliar">不熟悉</a>  <a href="%s/%s/del">删除</a> </p>\n' % (youdao_link(word), word, '; '.join(d[word]), freq,username, word,username,word, username,word)
diff --git a/app/test/test_page_position.py b/app/test/test_page_position.py
new file mode 100644
index 0000000..21a6722
--- /dev/null
+++ b/app/test/test_page_position.py
@@ -0,0 +1,59 @@
+"""
+Click the Familiar or Unfamiliar button. Specifically, we plan to make the following improvements:
+Click the Familiar or Unfamiliar button (current word frequency>1), the current word position is displayed at the top of the page;
+Click the Familiar or Unfamiliar button (current word frequency is 1), and the page will be displayed as the top of the entire page.
+"""
+from random import randint
+
+from selenium import webdriver
+from selenium.common.exceptions import NoSuchElementException
+from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
+
+driver = webdriver.Remote('http://localhost:4444/wd/hub', DesiredCapabilities.CHROME)
+driver.implicitly_wait(10)
+
+HOME_PAGE = 'http://121.4.94.30:91/'
+
+
+def click_by_random(text):
+    elements = driver.find_elements_by_link_text(text)  # 点击单词表中的第一个单词的熟悉按钮
+    elements[randint(0, len(elements) - 1)].click()
+    try:
+        location = driver.find_element_by_xpath('//a[@name="aaa"]').location  # 点击后单词次数≥1
+        roll_height = get_scrollTop()  # 获取滚动条的位置
+        assert int(location['y'] - roll_height) == 0  # 差值小于1
+    except NoSuchElementException:  # 点击后单词消失，scrollTop=0，页面回到最上面
+        roll_height = get_scrollTop()
+        assert roll_height == 0
+
+
+def get_scrollTop():
+    js = 'var h = document.body.scrollTop;' + 'return h'
+    roll_height = driver.execute_script(js)
+    return roll_height
+
+
+def test_page_position():
+    try:
+        driver.get(HOME_PAGE)
+        # login
+        driver.find_element_by_link_text('登录').click()
+
+        uname = 'lanhui'
+        password = 'l0ve1t'
+        driver.find_element_by_name('username').send_keys(uname)
+        driver.find_element_by_name('password').send_keys(password)
+
+        driver.find_element_by_xpath('//form[1]/p[3]/input[1]').click()  # 找到登录按钮
+
+        # 这里随机测试三个单词，点击熟悉
+        click_by_random('熟悉')
+        click_by_random('熟悉')
+        click_by_random('熟悉')
+        # 这里随机测试三个单词，点击不熟悉
+        click_by_random('不熟悉')
+        click_by_random('不熟悉')
+        click_by_random('不熟悉')
+
+    finally:
+        driver.quit()