diff --git a/Doc/library/urllib.parse.rst b/Doc/library/urllib.parse.rst
--- a/Doc/library/urllib.parse.rst
+++ b/Doc/library/urllib.parse.rst
@@ -515,6 +515,7 @@
    string.  The resultant string must be converted to bytes using the
    user-specified encoding before it is sent to :func:`urlopen` as the optional
    *data* argument.
+
    The resulting string is a series of ``key=value`` pairs separated by ``'&'``
    characters, where both *key* and *value* are quoted using :func:`quote_plus`
    above. When a sequence of two-element tuples is used as the *query*
@@ -531,6 +532,22 @@
    To reverse this encoding process, :func:`parse_qs` and :func:`parse_qsl` are
    provided in this module to parse query strings into Python data structures.
 
+   If the resultant string is to be used as *data* argument for
+   :func:`urlopen`, the string could be encoded using ISO-8859-1 which is the
+   default encoding for POST data used by urllib or the user can also encode using
+   a custom encoding , in which case, Content-Type: header should specify the
+   encoding value in addition to 'application/x-www-form-urlencoded' which is
+   specified for POST data.
+
+   For Example, utf-8 encoding can be used as follows.
+
+   ::
+
+        >>> sdata = urllib.parse.urlencode({"ሀ":"ሢ"})
+        >>> bytesdata = sdata.encode('utf-8')
+        >>> reqheaders=dict([("Content-Type"," application/x-www-form-urlencoded ; charset=utf-8")])
+        >>> urllib.request.Request('http://www.example.com',bytesdata,reqheaders)
+
    Refer to :ref:`urllib examples <urllib-examples>` to find out how urlencode
    method can be used for generating query string for a URL or data for POST.