user30836: I would like to ask if I can stack directly Adafruit PN532 RFID Shield onto my breadboard. Or do I need something for that? Thank you.

user4143: @Mazaryk is right.
Shields have a header that is offset by 0.16" from the other headers. Since a breadboard is a strict 0.1" grid that header won't fit into the holes.

user313: There was a Kickstarter project a few years ago to make just such an adapter. You might get in touch with the developer to find out whether he's made (or is planning) another run.

user31106: Chances are the offset headers won't allow the shield to directly plug into a breadboard. 
As @Majenko noted, shields have a header that is offset by 0.16" from the other headers. Since a breadboard is a strict 0.1" grid that header won't fit into the holes.

30836: <p>I would like to ask if I can stack directly Adafruit PN532 RFID Shield onto my breadboard. Or do I need something for that? Thank you.</p>
 4143: <p>@Mazaryk is right.</p>

<p>Shields have a header that is offset by 0.16" from the other headers. Since a breadboard is a strict 0.1" grid that header won't fit into the holes.</p>
 313: <p>There was a <a href="https://www.kickstarter.com/projects/818225433/breadboard-shield-adapter-for-microcontrollers-or" rel="nofollow noreferrer">Kickstarter project</a> a few years ago to make just such an adapter. You might get in touch with the developer to find out whether he's made (or is planning) another run.</p>
 31106: <p>Chances are the offset headers won't allow the shield to directly plug into a breadboard. </p>

<p>As @Majenko noted, shields have a header that is offset by 0.16" from the other headers. Since a breadboard is a strict 0.1" grid that header won't fit into the holes.</p>
