Abstract: Disclosed is an extension adapter and a shooting assembly. The extension adapter is configured for mounting a target on a target stand. The extension adapter comprises a connecting member and a target mounting seat interconnected with each other. The connecting member is configured for detachably connecting to the target stand, or being welded to the target stand, or being integrally formed with the target stand. The target mounting seat is configured for mounting the target; the shooting assembly comprises the aforementioned target stand. The present application solves the problems of poor adaptability and mounting stability between targets and target stand products having different sizes and specifications.