diff --git a/next_docs/en/api.rst b/next_docs/en/api.rst
index e43dd80d..787b5fe9 100644
--- a/next_docs/en/api.rst
+++ b/next_docs/en/api.rst
@@ -7,4 +7,3 @@
    api/read_api
    api/schemas
    api/io
-   api/classes
\ No newline at end of file
diff --git a/next_docs/en/api/classes.rst b/next_docs/en/api/classes.rst
deleted file mode 100644
index 670e7e8f..00000000
--- a/next_docs/en/api/classes.rst
+++ /dev/null
@@ -1,14 +0,0 @@
-Class Hierarchy
-===============
-
-.. inheritance-diagram:: magic_pdf.data.io.base magic_pdf.data.io.http magic_pdf.data.io.s3
-   :parts: 2
-
-
-.. inheritance-diagram:: magic_pdf.data.dataset
-   :parts: 2
-
-
-.. inheritance-diagram:: magic_pdf.data.data_reader_writer.base magic_pdf.data.data_reader_writer.filebase magic_pdf.data.data_reader_writer.multi_bucket_s3
-   :parts: 2
-
diff --git a/next_docs/en/user_guide/data/data_reader_writer.rst b/next_docs/en/user_guide/data/data_reader_writer.rst
index a12dcd02..132a4fff 100644
--- a/next_docs/en/user_guide/data/data_reader_writer.rst
+++ b/next_docs/en/user_guide/data/data_reader_writer.rst
@@ -201,4 +201,4 @@ Write Examples
     s3_writer1.write('s3://test_bucket/efg', '123'.encode())
 
 
-Check :doc:`../../api/classes` for more intuitions or check :doc:`../../api/data_reader_writer` for more details
+Check :doc:`../../api/data_reader_writer` for more details
diff --git a/next_docs/en/user_guide/data/dataset.rst b/next_docs/en/user_guide/data/dataset.rst
index f3cda02c..51fc40d3 100644
--- a/next_docs/en/user_guide/data/dataset.rst
+++ b/next_docs/en/user_guide/data/dataset.rst
@@ -36,5 +36,5 @@ Extract chars via third-party library, currently we use ``pymupdf``.
 
 
 
-Check :doc:`../../api/classes` for more intuitions or check :doc:`../../api/dataset` for more details
+Check :doc:`../../api/dataset` for more details
 
diff --git a/next_docs/en/user_guide/data/io.rst b/next_docs/en/user_guide/data/io.rst
index 0e0c3509..01285682 100644
--- a/next_docs/en/user_guide/data/io.rst
+++ b/next_docs/en/user_guide/data/io.rst
@@ -21,5 +21,5 @@ if MinerU have not provide the suitable classes. It is easy to implement new cla
         def write(self, path: str, data: bytes) -> None:
             pass
 
-Check :doc:`../../api/classes` for more intuitions or check :doc:`../../api/io` for more details
+Check :doc:`../../api/io` for more details