diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..389eeaf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,37 @@
+# automake file
+autom4te.cache
+m4
+src/.deps
+src/.libs
+utils/.deps
+test/.deps
+
+aclocal.m4
+Makefile
+Makefile.in
+ar-lib
+compile
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing
+qatzip.spec
+
+# compile obj
+src/*.lo
+src/*.o
+src/*.la
+utils/*.o
+test/*.o
+
+# app
+test/bt
+test/test
+utils/qzip
+utils/qzstd
\ No newline at end of file
diff --git a/README.md b/README.md
index d08428a..260f291 100644
--- a/README.md
+++ b/README.md
@@ -120,7 +120,7 @@ The compression level in QATzip could be mapped to standard zlib\* as below:
   in the other session.
 * For stream object, user should clear stream object by calling qzEndStream() before clear session
   object with qzTeardownSession(). Otherwise, memory leak happens.
-* For stream object, stream lenth must be smaller than `strm_buff_sz`, or QATzip would generate multiple
+* For stream object, stream length must be smaller than `strm_buff_sz`, or QATzip would generate multiple
   deflate block in order and has the last block with BFIN set.
 * For stream object, we will optimize the performance of the pre-allocation process using a thread-local
   stream buffer list in a future release.