diff --git a/aiogram/types/message_entity.py b/aiogram/types/message_entity.py
index b2aaf425..9788af05 100644
--- a/aiogram/types/message_entity.py
+++ b/aiogram/types/message_entity.py
@@ -77,6 +77,9 @@ class MessageEntity(base.TelegramObject):
         if self.type == MessageEntityType.ITALIC:
             method = markdown.hitalic if as_html else markdown.italic
             return method(entity_text)
+        if self.type == MessageEntityType.SPOILER:
+            method = markdown.spoiler if as_html else markdown.hspoiler
+            return method(entity_text)
         if self.type == MessageEntityType.PRE:
             method = markdown.hpre if as_html else markdown.pre
             return method(entity_text)
@@ -108,10 +111,11 @@ class MessageEntityType(helper.Helper):
     :key: PHONE_NUMBER
     :key: BOLD
     :key: ITALIC
-    :key: CODE
-    :key: PRE
     :key: UNDERLINE
     :key: STRIKETHROUGH
+    :key: SPOILER
+    :key: CODE
+    :key: PRE
     :key: TEXT_LINK
     :key: TEXT_MENTION
     """
@@ -127,9 +131,10 @@ class MessageEntityType(helper.Helper):
     PHONE_NUMBER = helper.Item()  # phone_number
     BOLD = helper.Item()  # bold -  bold text
     ITALIC = helper.Item()  # italic -  italic text
-    CODE = helper.Item()  # code - monowidth string
-    PRE = helper.Item()  # pre - monowidth block
     UNDERLINE = helper.Item()  # underline
     STRIKETHROUGH = helper.Item()  # strikethrough
+    SPOILER = helper.Item()  # spoiler
+    CODE = helper.Item()  # code - monowidth string
+    PRE = helper.Item()  # pre - monowidth block
     TEXT_LINK = helper.Item()  # text_link -  for clickable text URLs
     TEXT_MENTION = helper.Item()  # text_mention -  for users without usernames
diff --git a/aiogram/utils/markdown.py b/aiogram/utils/markdown.py
index 75f5fea0..3b50ffd4 100644
--- a/aiogram/utils/markdown.py
+++ b/aiogram/utils/markdown.py
@@ -7,6 +7,7 @@ MD_SYMBOLS = (
     (LIST_MD_SYMBOLS[1], LIST_MD_SYMBOLS[1]),
     (LIST_MD_SYMBOLS[2], LIST_MD_SYMBOLS[2]),
     (LIST_MD_SYMBOLS[2] * 3 + "\n", "\n" + LIST_MD_SYMBOLS[2] * 3),
+    ("||", "||"),
     ("<b>", "</b>"),
     ("<i>", "</i>"),
     ("<code>", "</code>"),
@@ -113,6 +114,32 @@ def hitalic(*content, sep=" ") -> str:
     )
 
 
+def spoiler(*content, sep=" ") -> str:
+    """
+    Make spoiler text (Markdown)
+
+    :param content:
+    :param sep:
+    :return:
+    """
+    return markdown_decoration.spoiler(
+        value=markdown_decoration.quote(_join(*content, sep=sep))
+    )
+
+
+def hspoiler(*content, sep=" ") -> str:
+    """
+    Make spoiler text (HTML)
+
+    :param content:
+    :param sep:
+    :return:
+    """
+    return html_decoration.spoiler(
+        value=html_decoration.quote(_join(*content, sep=sep))
+    )
+
+
 def code(*content, sep=" ") -> str:
     """
     Make mono-width text (Markdown)
diff --git a/aiogram/utils/text_decorations.py b/aiogram/utils/text_decorations.py
index 40fe296b..ae9af7d4 100644
--- a/aiogram/utils/text_decorations.py
+++ b/aiogram/utils/text_decorations.py
@@ -27,9 +27,9 @@ class TextDecoration(ABC):
         :return:
         """
         if entity.type in {"bot_command", "url", "mention", "phone_number"}:
-            # This entities should not be changed
+            # These entities should not be changed
             return text
-        if entity.type in {"bold", "italic", "code", "underline", "strikethrough"}:
+        if entity.type in {"bold", "italic", "spoiler", "code", "underline", "strikethrough"}:
             return cast(str, getattr(self, entity.type)(value=text))
         if entity.type == "pre":
             return (
@@ -115,6 +115,10 @@ class TextDecoration(ABC):
     def italic(self, value: str) -> str:  # pragma: no cover
         pass
 
+    @abstractmethod
+    def spoiler(self, value: str) -> str:  # pragma: no cover
+        pass
+
     @abstractmethod
     def code(self, value: str) -> str:  # pragma: no cover
         pass
@@ -150,6 +154,9 @@ class HtmlDecoration(TextDecoration):
     def italic(self, value: str) -> str:
         return f"<i>{value}</i>"
 
+    def spoiler(self, value: str) -> str:
+        return f'<span class="tg-spoiler">{value}</span>'
+
     def code(self, value: str) -> str:
         return f"<code>{value}</code>"
 
@@ -181,6 +188,9 @@ class MarkdownDecoration(TextDecoration):
     def italic(self, value: str) -> str:
         return f"_\r{value}_\r"
 
+    def spoiler(self, value: str) -> str:
+        return f"||{value}||"
+
     def code(self, value: str) -> str:
         return f"`{value}`"