The invention brings forward a battery box and an automobile. The battery box comprises a frame body and a sealing bottom plate. The sealing bottom plate is riveted with the frame body, and the edge of the top surface of the sealing bottom plate fits and is glued with the periphery of the bottom of the frame body. In the battery box provided by the invention, the sealing bottom plate and the framebody are fixed by riveting, so that there is no need to leave a design margin. The riveting construction process is simple and the installation is convenient, which can greatly improve the construction efficiency. Meanwhile, the welding amount of the battery box can be also greatly reduced, no thermal stress will be generated, deformation of the box body and residual stress can be reduced, and itis convenient to improve the overall strength of the battery box. It should also be pointed out that the top surface of the sealing bottom plate fits and is glued with the periphery of the bottom ofthe frame body to realize the sealing of the periphery of the frame body.