Plastic iron with vent hole device and manufacturing method of plastic iron

The invention discloses plastic iron with a vent hole device and a manufacturing method of the plastic iron, and relates to the field of backlight modules in electronic products. The plastic iron comprises a plastic body, wherein a connecting groove is formed in the inner wall of the plastic body, an iron plate is connected to the inner wall of the connecting groove, heat dissipation holes are formed in the iron plate, and air holes are formed in the two sides of the iron plate. Through forming the heat dissipation holes and the air holes, a vacuumizing pipe is inserted into the air holes through the heat dissipation holes after the plastic body is connected with the iron plate, a vacuumizing device is started, a suction force generated by the vacuumizing device sucks out air hidden between the plastic body and the iron plate through the air holes, the problems that time and labor are wasted and efficiency is not high during bubble removing are effectively solved, the air holes are formed to help bubbles to r