diff --git a/PyPI/setup.cfg b/PyPI/setup.cfg
index aa53b6f..996aefa 100644
--- a/PyPI/setup.cfg
+++ b/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.1.190
+version = 0.1.191
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/PyPI/src/guan.egg-info/PKG-INFO b/PyPI/src/guan.egg-info/PKG-INFO
index 2c889b1..09cc134 100644
--- a/PyPI/src/guan.egg-info/PKG-INFO
+++ b/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.4
 Name: guan
-Version: 0.1.190
+Version: 0.1.191
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/PyPI/src/guan/data_processing.py b/PyPI/src/guan/data_processing.py
index 771ad05..ed78292 100644
--- a/PyPI/src/guan/data_processing.py
+++ b/PyPI/src/guan/data_processing.py
@@ -80,6 +80,67 @@ def loop_calculation_with_three_parameters(function_name, parameter_array_1, par
         i1 += 1
     return result_array
 
+# 文本对比
+def word_diff(a, b, print_show=1):
+    import difflib
+    import re
+    import guan
+    a_words = guan.divide_text_into_words(a)
+    b_words = guan.divide_text_into_words(b)
+    sm = difflib.SequenceMatcher(None, a_words, b_words)
+    result = []
+    for tag, i1, i2, j1, j2 in sm.get_opcodes():
+        if tag == "equal":
+            result.extend(a_words[i1:i2])
+        elif tag == "delete":
+            result.append("\033[91m" + " ".join(a_words[i1:i2]) + "\033[0m")
+        elif tag == "insert":
+            result.append("\033[92m" + " ".join(b_words[j1:j2]) + "\033[0m")
+        elif tag == "replace":
+            result.append("\033[91m" + " ".join(a_words[i1:i2]) + "\033[0m")
+            result.append("\033[92m" + " ".join(b_words[j1:j2]) + "\033[0m")
+    diff_result = " ".join(result)
+    diff_result = re.sub(r' +', ' ', diff_result)
+    if print_show:
+        print(diff_result)
+    return diff_result
+
+# 文本对比（写入HTML文件）
+def word_diff_to_html(a, b, filename='diff_result', write_file=1):
+    import difflib
+    from html import escape
+    import re
+    import guan
+    a_words = guan.divide_text_into_words(a)
+    b_words = guan.divide_text_into_words(b)
+    sm = difflib.SequenceMatcher(None, a_words, b_words)
+    html_parts = []
+    for tag, i1, i2, j1, j2 in sm.get_opcodes():
+        if tag == "equal":
+            html_parts.append(" ".join(map(escape, a_words[i1:i2])))
+        elif tag == "delete":
+            html_parts.append(f"<span style='background:#e74c3c;color:white;padding:1px 2px;border-radius:2px'>"
+                        + " ".join(map(escape, a_words[i1:i2]))
+                        + "</span>")
+        elif tag == "insert":
+            html_parts.append(f"<span style='background:#2ecc71;color:white;padding:1px 2px;border-radius:2px'>"
+                        + " ".join(map(escape, b_words[j1:j2]))
+                        + "</span>")
+        elif tag == "replace":
+            html_parts.append(f"<span style='background:#e74c3c;color:white;padding:1px 2px;border-radius:2px'>"
+                        + " ".join(map(escape, a_words[i1:i2]))
+                        + "</span>")
+            html_parts.append(f"<span style='background:#2ecc71;color:white;padding:1px 2px;border-radius:2px'>"
+                        + " ".join(map(escape, b_words[j1:j2]))
+                        + "</span>")
+    diff_result = " ".join(html_parts)
+    diff_result = diff_result.replace("\n", "<br>")
+    diff_result = re.sub(r' +', ' ', diff_result)
+    if write_file:
+        with open(filename+'.html', 'w', encoding='UTF-8') as f:
+            f.write(diff_result)
+    return diff_result
+
 # 打印数组
 def print_array(array, line_break=0):
     if line_break == 0: