diff --git a/dev_tools/Redis-7.4.2-Windows-x64-cygwin.zip b/dev_tools/Redis-7.4.2-Windows-x64-cygwin.zip
deleted file mode 100644
index 3216673..0000000
Binary files a/dev_tools/Redis-7.4.2-Windows-x64-cygwin.zip and /dev/null differ
diff --git a/documents/psycopg3/Pg_Python_API说明.docx b/documents/psycopg3/Pg_Python_API说明.docx
deleted file mode 100644
index 01fd28a..0000000
Binary files a/documents/psycopg3/Pg_Python_API说明.docx and /dev/null differ
diff --git a/documents/psycopg3/psycopg3 Official document.pdf b/documents/psycopg3/psycopg3 Official document.pdf
deleted file mode 100644
index a705706..0000000
Binary files a/documents/psycopg3/psycopg3 Official document.pdf and /dev/null differ
diff --git a/documents/psycopg3/psycopg3-all about the love between Python and PostgreSQL.pdf b/documents/psycopg3/psycopg3-all about the love between Python and PostgreSQL.pdf
deleted file mode 100644
index e3a2f25..0000000
Binary files a/documents/psycopg3/psycopg3-all about the love between Python and PostgreSQL.pdf and /dev/null differ