The invention discloses an automatic film sticking machine. The automatic film sticking machine is used for sticking films onto products. The automatic film sticking machine comprises positioning clamps, a workpiece taking device, film sticking mechanical arms, defoaming devices and a conveying device; the positioning clamps are used for clamping and positioning the products; the workpiece takingdevice comprises storage bins for storing protective films and a workpiece taking mechanical arm for taking out the protective films from the storage bins; the film sticking mechanical arms are used for transferring the protective films from the workpiece taking mechanical arm to the positioning clamps and enabling the protective films to be attached to the products; the defoaming devices are usedfor removing bubbles between the protective films and the products; and the conveying device is used for conveying the products in the positioning clamps into the defoaming devices. The automatic film sticking machine has the advantages of being capable of realizing full-automatic film sticking, high in film sticking efficiency and good in effect.