diff --git a/plugins/platforms/feishu/adapter.py b/plugins/platforms/feishu/adapter.py
index eb1f5df3a56..f3756a8589b 100644
--- a/plugins/platforms/feishu/adapter.py
+++ b/plugins/platforms/feishu/adapter.py
@@ -3874,7 +3874,15 @@ class FeishuAdapter(BasePlatformAdapter):
         if preferred == "photo":
             return self._resolve_media_message_type(media_types[0] if media_types else "", default=MessageType.PHOTO)
         if preferred == "audio":
-            return self._resolve_media_message_type(media_types[0] if media_types else "", default=MessageType.AUDIO)
+            # Lark's native "audio" msg_type is an in-app voice recording, not
+            # an uploaded audio file (those arrive as "file"/"media" and are
+            # normalized to "document"). Classify it as VOICE so the gateway
+            # auto-transcribes it (Opus → STT) the same way
+            # Discord/DingTalk/Telegram/etc. do — otherwise a Feishu voice note
+            # reaches the agent as an untranscribable AUDIO attachment and is
+            # silently ignored. Follow-up to #28993, which added native
+            # voice-note transcription for Discord + DingTalk.
+            return MessageType.VOICE
         if preferred == "document":
             return self._resolve_media_message_type(media_types[0] if media_types else "", default=MessageType.DOCUMENT)
         return MessageType.TEXT
diff --git a/tests/gateway/test_feishu.py b/tests/gateway/test_feishu.py
index 0e411b8cf60..d887bc94f38 100644
--- a/tests/gateway/test_feishu.py
+++ b/tests/gateway/test_feishu.py
@@ -1490,7 +1490,11 @@ class TestAdapterBehavior(unittest.TestCase):
         text, msg_type, media_urls, media_types, _mentions = asyncio.run(adapter._extract_message_content(message))
 
         self.assertEqual(text, "")
-        self.assertEqual(msg_type.value, "audio")
+        # Lark "audio" msg_type is a native voice recording (the fixture is
+        # literally voice.ogg) — it must classify as VOICE so the gateway
+        # auto-transcribes it, not AUDIO (a non-transcribed file attachment).
+        # See the #28993 follow-up fix in _resolve_normalized_message_type.
+        self.assertEqual(msg_type.value, "voice")
         self.assertEqual(media_urls, ["/tmp/feishu-audio.ogg"])
         self.assertEqual(media_types, ["audio/ogg"])
 
diff --git a/tests/gateway/test_feishu_voice_message_type.py b/tests/gateway/test_feishu_voice_message_type.py
new file mode 100644
index 00000000000..c6e6723c562
--- /dev/null
+++ b/tests/gateway/test_feishu_voice_message_type.py
@@ -0,0 +1,46 @@
+"""Regression tests for Feishu native voice-note classification.
+
+Lark's native ``audio`` msg_type is an in-app voice recording (uploaded
+audio files arrive as ``file``/``media`` and normalize to ``document``). It
+must be classified as MessageType.VOICE so the gateway auto-transcribes it
+(Opus → STT), the same way Discord/DingTalk/Telegram do. Before the fix it
+resolved to MessageType.AUDIO, which the gateway treats as a non-transcribed
+file attachment — so a Feishu voice note silently reached the agent as
+untranscribable audio. Follow-up to #28993 (Discord + DingTalk).
+"""
+
+from gateway.platforms.base import MessageType
+from plugins.platforms.feishu.adapter import FeishuAdapter, FeishuNormalizedMessage
+
+
+def _resolve(preferred: str, media_types):
+    """Call _resolve_normalized_message_type without a full adapter init.
+
+    The method only reads normalized.preferred_message_type and delegates to
+    the static _resolve_media_message_type — no instance state — so we bypass
+    __init__ (which needs Lark credentials/config) via __new__.
+    """
+    adapter = FeishuAdapter.__new__(FeishuAdapter)
+    normalized = FeishuNormalizedMessage(
+        raw_type=preferred,
+        text_content="",
+        preferred_message_type=preferred,
+    )
+    return adapter._resolve_normalized_message_type(normalized, media_types)
+
+
+def test_native_voice_audio_is_classified_as_voice():
+    """Lark audio msg_type (voice recording) → VOICE, so it gets transcribed."""
+    assert _resolve("audio", ["audio/opus"]) is MessageType.VOICE
+
+
+def test_native_voice_audio_without_media_type_is_voice():
+    """A voice note with no resolved mime still classifies as VOICE."""
+    assert _resolve("audio", []) is MessageType.VOICE
+
+
+def test_photo_and_document_unaffected():
+    """The fix is scoped to the audio branch — other types are unchanged."""
+    assert _resolve("photo", ["image/png"]) is MessageType.PHOTO
+    assert _resolve("document", ["application/pdf"]) is MessageType.DOCUMENT
+    assert _resolve("text", []) is MessageType.TEXT