Automobile wheel hub constant-positive mark device

The utility model discloses an automobile wheel hub constant-positive mark device arranged on the center portion of a wheel but to enable the sigh positive surface adhered on the device on the center portion of the wheel hub to be always upward in the running process of the automobile. The device mainly comprises an imbalance still surface (1), a movable surface (3) and a slide device (4) whose one end is movably connected with the movable surface (3). The other end of the slide device (4) is fixedly connected with the imbalance still surface (1) provided with a sign (2). The movable surface (3) is connected with the center portion of the wheel hub of the automobile. In the using process, the movable surface rotates with the wheel of the automobile and the positive surface of the sign is upward by the function of the imbalance on the imbalance still surface and thus the utility model is a new advertisement media.