The utility model discloses a distribution box with a damping device. The distribution box comprises a distribution box body, a plurality of vent holes are formed in a side panel of the distribution box body, two T-shaped blocks are welded to each of the two sides of the lower end of the distribution box body, a fixing base is installed at the lower end of the distribution box body, rubber bufferblocks are installed on the two sides of the inner wall of the fixing base, and T-shaped grooves are formed in the positions, corresponding to the T-shaped blocks, according to the utility model, preliminary shock absorption can be carried out through the rubber buffer block; the T-shaped block is matched with the T-shaped groove in the rubber buffer block; the stability of the distribution box isimproved, vibration borne by the distribution box is buffered through the damping mechanism, the vibration amplitude of the distribution box is reduced through the anti-excitation mechanism, and thedistribution box can be temporarily stabilized, so that excitation of the distribution box is effectively prevented, vibration of elements in the distribution box is reduced, and the safety of devicesin the distribution box is improved.