The invention provides a vibrating impregnation device for an aluminum electrolytic capacitor. The vibrating impregnation device comprises a cylinder body and a seal cover, wherein the seal cover is tightly connected with the cylinder body and forms an impregnation interval; the seal cover is provided with pneumatic control valves for pumping vacuum and pressurization; a liner is arranged in the cylinder body; the side surface of the liner and the bottom surface of the liner of the cylinder body are connected to the bottom of the cylinder body through an elastic part; and an oscillation motor is arranged at the bottom of the liner. Compared with the prior art, the vibrating impregnation device has the beneficial effects that the oscillation motor sends out a vibration wave in the impregnation process, the vibration wave pushes an electrolyte, and meanwhile, an impregnated capacitor core also slightly vibrates, so that the capacitor core is in a dynamic state in the impregnation process, discharge of small bubbles in the deep of the capacitor core is facilitated, rapid penetration of the electrolyte is facilitated and the impregnation time can be greatly shortened.