Baloon Mounting Plates are a mechanical Strip to which balloons are easily mounted and removed to facilitate installation and removal of the balloons at an event site, on which the balloons prepared for distribution can be orderly arranged, and that does not produce refuse at the event site. In the balloon mounting plate, a large number of cutout sections and a large number of insertion sections are formed in a CR Sheet Made Plate of an appropriate thickness. To attach a balloon to the plate