The invention discloses an automatic metering feeding device for an ultra-fine powder energetic material. The automatic metering feeding device comprises a main structure and a control system. The energetic material is added to a hopper and then added into a material temporary storage device through a vibration device; a base adjustor adjusts the tilt angle of the material temporary storage device, so that the material fully makes contact with a sending screw rod; and an explosion-proof servo motor drives the sending screw rod to rotate to convey the energetic material to an explosion-proof electronic scale to be weighed in real time. The control system is used for detecting and feeding back the motion state of the whole device, and a temperature detection sensor and a pressure detection sensor are used for detecting and feeding back the temperature of the material in a discharging cylinder and the pressure of the sending screw rod in real time. The safety and quality problems of automatic metering feeding of the ultra-fine powder energetic material are effectively solved, consistency and stability of metering feeding of the ultra-fine powder energetic material are greatly improved, and the production efficiency is improved. The automatic metering feeding device can be applied to various ultra-fine powder energetic material metering feeding processes.