Steering transmission assembly and automobile

The utility model relates to a steering transmission assembly and an automobile. The steering transmission assembly comprises a steering knuckle arm, a reinforcing piece, a ball pin and a fastening piece. And the steering knuckle arm is provided with an outer through hole. The reinforcing piece penetrates through the outer through hole in the feeding adjusting direction in a threaded mode. And the reinforcer is provided with an inner through hole. One end of the ball pin is provided with a ball head part. The ball pin is arranged in the inner through hole in a penetrating mode, and the ball pin is limited by the reinforcing piece under the condition that the other end of the ball pin penetrates into the inner through hole. The fastening piece is arranged on the ball pin in a threaded and sleeved mode and abuts against the surface, opposite to the ball head portion, of the steering knuckle arm. As the ball pin is mounted at the butt joint end of the steering knuckle arm, and the ball head part of the ball pin