The invention relates to an automatic bait disk which is characterized by comprising a base, a guide slot, a bait tray and a drive device, wherein the guide slot is arranged on the base; the bait tray is matched with the guide slot and moves along the slot channel of the guide slot; and the drive device can drive the bait tray to move. The automatic bait disk has the advantages that the moveable bait tray is adopted so that non-living baits contained in the tray are enabled to be in a movable state, which is adapted to a feed habit that batrachias and snakes just capture movable food so that the batrachias and the snakes can eat the non-living baits; and the non-living baits can adopt common fodder or be collocated according to nutritional demands, so that the baits have comprehensive ingredients in order to balance the nutrition taken by the batrachias and the snakes and enable the bactrachias and the snakes to grow fast.