diff --git a/cloudnet_api_client/client.py b/cloudnet_api_client/client.py
index a72a2a0..ba7f634 100644
--- a/cloudnet_api_client/client.py
+++ b/cloudnet_api_client/client.py
@@ -322,7 +322,7 @@ def calibration(self, instrument_pid: str, date: datetime.date | str) -> dict:
 
     def download(
         self,
-        metadata: MetadataList,
+        metadata: MetadataList | TMetadata,
         output_directory: str | PathLike = ".",
         concurrency_limit: int = 5,
         progress: bool | None = None,
@@ -340,7 +340,7 @@ def download(
 
     async def adownload(
         self,
-        metadata: MetadataList,
+        metadata: MetadataList | TMetadata,
         output_directory: str | PathLike = ".",
         concurrency_limit: int = 5,
         progress: bool | None = None,
diff --git a/cloudnet_api_client/dl.py b/cloudnet_api_client/dl.py
index 1856770..1f4c1e7 100644
--- a/cloudnet_api_client/dl.py
+++ b/cloudnet_api_client/dl.py
@@ -8,7 +8,10 @@
 from tqdm import tqdm
 
 from cloudnet_api_client import utils
-from cloudnet_api_client.containers import Metadata, ProductMetadata
+from cloudnet_api_client.containers import (
+    Metadata,
+    ProductMetadata,
+)
 
 
 class BarConfig:
@@ -49,13 +52,13 @@ class DlParams:
 
 async def download_files(
     base_url: str,
-    metadata: Iterable[Metadata],
+    metadata: Iterable[Metadata] | Metadata,
     output_path: Path,
     concurrency_limit: int,
     disable_progress: bool | None,
     validate_checksum: bool = False,
 ) -> list[Path]:
-    metas = list(metadata)
+    metas = list(metadata) if isinstance(metadata, Iterable) else [metadata]
     file_exists = _checksum_matches if validate_checksum else _size_and_name_matches
     semaphore = asyncio.Semaphore(concurrency_limit)
     total_bytes = sum(meta.size for meta in metas)
diff --git a/tests/test_client.py b/tests/test_client.py
index 8eb7008..3abe06d 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -462,6 +462,19 @@ def test_download_existing_file_skip(self, client: APIClient, tmp_path: Path):
         assert paths1 == paths2
         assert paths2[0].stat().st_size == original_size
 
+    def test_downloading_single_metadata(self, client: APIClient, tmp_path: Path):
+        uuid = "ab872770-9136-4e61-8958-31e62abdfb1b"
+        meta = client.file(uuid)
+        paths = client.download(meta, output_directory=tmp_path, progress=False)
+        assert len(paths) == 1
+        assert paths[0].exists()
+
+    def test_downloading_single_metadata_II(self, client: APIClient, tmp_path: Path):
+        meta = client.raw_files(date_from="2025-08-01")
+        assert len(meta) == 3
+        paths = client.download(meta[0], output_directory=tmp_path, progress=False)
+        assert len(paths) == 1
+
     async def test_async_download(self, client: APIClient, tmp_path: Path):
         meta = client.raw_files(date_from="2025-08-01")
         assert len(meta) == 3