Abstract: A monitor supporting device includes an arm module, a connection module, and a pivoting module. The connection module includes a main plate body adapted to be secured to an arm-securing portion of a monitor, and a cable-fixing unit connected to the main plate body. The cable-fixing unit includes an extension arm body that defines a constraining space adapted for passage of a plurality of cables therethrough, and that is adapted for allowing a cable tie to tie and secure the cables thereonto. The pivoting module is connected to the arm module and the main plate body, such that the connection module is pivotable relative to the arm module. A junction of the pivoting module and the main plate body is disposed above the extension arm body.