The utility model discloses an electric automobile battery bearing device which comprises a box body, a box cover and a bearing frame fixedly arranged at the bottom of the box body, wherein connecting plates used for being connected with a vertical supporting device of the box body and inserted pins connected with an automobile chassis in an insertion way to resist transverse force are arranged on the bearing frame; the box body and the box cover are formed by welding plates. According to the electric automobile battery bearing device provided by the utility model, gravity of a battery, and impact forces borne by the box body in the vertical direction and the horizontal direction are borne by the bearing frame, the connecting plates and the inserted pins, so that the box body and the box cover are smaller in stress, and the box body and the box cover can be manufactured by plates thinner than that of an existing battery box body. Therefore, the electric automobile battery bearing device is light in weight and lower in production cost; relative to the existing battery box body formed by punch forming, the box body and the box cover are formed by welding plates, so that the manufacturing process is easier, the manufacturing cost is lower, and the electric automobile battery bearing device is more suitable for mounting of batteries in different specifications and sizes.