The invention discloses an automatic lithium battery adjusting, buffering and ventilating device for a new energy automobile in the technical field of new energy automobiles. The device comprises a base, and is characterized in that the top of the base is welded with a connecting frame, a ventilation mechanism is mounted in an inner cavity of the base, the side wall of the mounting frame is provided with a buffer mechanism, an automatic switching mechanism is mounted in the inner cavity of the base, ventilation and heat dissipation effects on the lithium battery are achieved by through holes and a fan, the effect of enabling the fan to automatically operate is achieved through cooperative use of a relay and the fan, and the buffer mechanism formed by matching a clamping block, a clamping groove and a damping spring can reduce the collision of the lithium battery during the running of the automobile. Meanwhile, the through holes formed in the top of the connecting frame can dissipate heat in the lithium battery and effectively perform ventilation and heat dissipation on the lithium battery. In addition, the arrangement of a filter plate can effectively prevent dust from entering themachine body, so that the normal use of the lithium battery is guaranteed, and the service life of the lithium battery is prolonged.