The invention discloses a lithium battery placement device for an electric vehicle. The lithium battery placement device comprises a main shell, a top cover, a sliding block, a first spring, a baffle,a battery body, a heat conduction plate, cooling fins, a supporting plate, a first connecting block, a second spring, a second connecting block, a connecting shell, a first fixing shaft, a connectingrod, a second fixing shaft, a fan box, a fan, a through hole and a fixing block. According to the device, the battery fixing effect is achieved through the matching effect of the fixing plate and thebaffle; the heat conduction plate and the cooling fins have the heat dissipation effect on the battery, and the service life of the lithium battery is prolonged; the device internally provided with the fan and the through hole so that heat can be dissipated timely, and the working efficiency of the lithium battery can be improved; through the matching effect of the first connecting block, the springs and the second connecting block, the damping effect is achieved for the device, and the device is prevented from being damaged by external vibration. The device is simple in structure, obvious inbenefit and convenient to use and popularize.