The invention relates to the field of capacitor production equipment, particularly to a capacitor encapsulation device. The capacitor encapsulation device comprises a tank and a tank cover at the topof the tank body, wherein the tank cover is provided with an air outlet; the inner bottom of the tank body is provided with a plurality of clamping bases; an air outlet is provided with a one-way airoutlet valve; the inside of the tank body is provided with a driving wheel and a plurality of driven wheels, the driven wheels are arranged on the circumference of the driving wheel and driven by thedriving wheel to rotate, the driven wheels are also eccentrically connected with eccentric rods, which are provided with gluing pipes for encapsulating capacitors and arranged in the lateral directionof the clamping bases; the eccentric rods are fixedly provided with fans for exhausting air via the air outlet. The capacitor encapsulation device can uniformly apply encapsulating glue onto the capacitors and reduce bubbles generated during an encapsulating glue applying process.