diff --git a/CHANGELOG.md b/CHANGELOG.md
index a50efc3..af8543a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 ### 💡 Feature
 
-- Add `--offset`, `--length` options in `sync-creator` command
+- Added support for downloading works within a specified range of quantity.
+  - Added `--offset`, `--length` options in `sync-creator` command
   - `--offset`: Posts result offset (or start offset)
   - `--length`: The number of posts to fetch, defaults to fetching all posts
   
@@ -21,7 +22,8 @@
 
 ### 💡 新特性
 
-- 在 `sync-creator` 命令中增加了 `--offset`, `--length` 选项
+- 增加下载指定数量范围作品的支持
+  - 在 `sync-creator` 命令中增加了 `--offset`, `--length` 选项
   - `--offset`：作品结果偏移量（或起始偏移量）
   - `--length`：要获取的作品数量，默认获取所有作品
   
diff --git a/ktoolbox/action/job.py b/ktoolbox/action/job.py
index 93517f4..f6b1e8e 100644
--- a/ktoolbox/action/job.py
+++ b/ktoolbox/action/job.py
@@ -98,7 +98,7 @@ async def create_job_from_creator(
         *,
         all_pages: bool = False,
         offset: int = 0,
-        length: int = 50,
+        length: Optional[int] = 50,
         save_creator_indices: bool = True,
         mix_posts: bool = None,
         start_time: Optional[datetime],
@@ -125,8 +125,11 @@ async def create_job_from_creator(
     logger.info(f"Start fetching posts from creator {creator_id}")
     post_list: List[Post] = []
     start_offset = offset - offset % 50
-    page_num = length // 50 + 1
-    page_counter = count() if all_pages else iter(range(page_num))
+    if all_pages:
+        page_counter = count()
+    else:
+        page_num = length // 50 + 1
+        page_counter = iter(range(page_num))
 
     try:
         async for part in fetch_creator_posts(service=service, creator_id=creator_id, o=start_offset):
@@ -139,6 +142,8 @@ async def create_job_from_creator(
 
     if not all_pages:
         post_list = post_list[offset % 50:][:length]
+    else:
+        post_list = post_list[offset % 50:]
 
     # Filter posts by publish time
     if start_time or end_time:
diff --git a/ktoolbox/cli.py b/ktoolbox/cli.py
index 51c79ce..d676e7b 100644
--- a/ktoolbox/cli.py
+++ b/ktoolbox/cli.py
@@ -247,7 +247,7 @@ async def sync_creator(
             Set to latest time (infinity) if ``None`` was given. \
             Time format: ``%Y-%m-%d``
         :param offset: Result offset (or start offset)
-        :param length: The number of posts to fetch, defaults to fetching all posts.
+        :param length: The number of posts to fetch, defaults to fetching all posts after ``offset``.
         """
         # Get service, creator_id
         if url: