The invention relates to a plastic regenerator. The plastic regenerator includes a melting device, a feed inlet is fixedly disposed on the melting device, a fixed bracket is fixedly disposed under themelting device, an air heater is disposed on one side of the melting device, a controller is fixed on the air heater, one side of the controller is equipped with a hot air duct, one end of the hot air duct is in fixed connection with the air heater, the other end of the hot air duct is in fixed connection with the melting device, a forced discharging device is fixed on the other side of the melting device, a feed delivery pipe is fixedly disposed on one side of the forced discharging device, one side of the feed delivery pipe is fixedly equipped with a plastic reaction kettle, and one side ofthe plastic reaction kettle is provided with a catalyst placement box. The invention has the beneficial effects that: melted plastics and a catalyst can be stirred by the plastic reaction kettle, sothat petroleum, diesel oil and other fuels can be decomposed out, and plastic regeneration can be realized; and a heating wire can prevent the pre-cooling and solidification of molten plastics from affecting the production efficiency.