diff --git a/Note/FormatLogViewController.swift b/Note/FormatLogViewController.swift
index deea6b1..9e6448e 100644
--- a/Note/FormatLogViewController.swift
+++ b/Note/FormatLogViewController.swift
@@ -40,6 +40,7 @@ class FormatLogViewController: UIViewController {
         formatButton.backgroundColor = .systemBlue
         formatButton.setTitleColor(.white, for: .normal)
         formatButton.layer.cornerRadius = 12
+        formatButton.addTarget(self, action: #selector(didTapFormatButton), for: .touchUpInside)
         view.addSubview(formatButton)
 
         NSLayoutConstraint.activate([
@@ -58,6 +59,32 @@ class FormatLogViewController: UIViewController {
     @objc private func didTapDoneButton() {
         textView.resignFirstResponder()
     }
+
+    @objc private func didTapFormatButton() {
+        textView.text = formatLog(textView.text)
+    }
+
+    private func formatLog(_ text: String) -> String {
+        var content = text
+
+        content = content.replacingOccurrences(of: "# ", with: "")
+        content = content.replacingOccurrences(of: "#", with: "")
+        content = content.replacingOccurrences(of: ";", with: "。")
+        content = content.replacingOccurrences(of: "；", with: "。")
+        content = content.replacingOccurrences(of: ".", with: "。")
+        content = content.replacingOccurrences(of: "（", with: "(")
+        content = content.replacingOccurrences(of: "）", with: ")")
+        content = content.replacingOccurrences(of: "?", with: "？")
+        content = content.replacingOccurrences(of: ",", with: "，")
+        content = content.replacingOccurrences(of: ":", with: "：")
+        content = content.replacingOccurrences(of: "日星期", with: "日 星期")
+        content = "# " + content
+        content = content.replacingOccurrences(of: "一、生活方面", with: "## 一、生活方面")
+        content = content.replacingOccurrences(of: "二、交易方面", with: "## 二、交易方面")
+        content = content.replacingOccurrences(of: "三、工作方面", with: "## 三、工作方面")
+
+        return content
+    }
 }
 
 extension FormatLogViewController: UITextViewDelegate {