diff --git a/README.rst b/README.rst
index dc0d1d95..1c97fba2 100644
--- a/README.rst
+++ b/README.rst
@@ -139,6 +139,25 @@ To compile the source code, gcc >= 4.8.3 or clang >= 3.4 is required.
    them from crashing. A patch is welcome to make multi threading work
    on Mac OS X platform.
 
+Notes for building on Windows (Mingw/Cygwin)
+-------------------------------------------
+
+Under Mingw environment, you can only complie the library, it's `libnghttp2-X.dll` and `libnghttp2.a`.
+
+If you want to compile the applications(`h2load`, `nghttp`, `nghttpx`, `nghttpd`), you need to use the Cygwin environment.
+
+Under Cygwin environment, to compile the applications you need to compile and install the `libev` first.
+
+and second, you need to undefine the macro \_\_STRICT\_ANSI\_\_, if you not, the functions `fdopen`, `fileno` and `strptime` will not available.
+
+the simple command like this:
+
+	export CFLAGS="-U__STRICT_ANSI__ -I$libev_PREFIX/include -L$libev_PREFIX/lib"
+	export CXXFLAGS=$CFLAGS
+	make
+
+If you want to compile the applications under `examples/`, you need to remove or rename the `event.h` from libev's installation, because it conflicts with libevent's installation.
+
 Building the documentation
 --------------------------