A projecting lamp structure having a light adjusting device is provided. The projecting lamp structure includes a light source disposed on a circuit board and configured to provide light rays. A lens having an asymmetrical bat-wing candle power distribution is disposed on the circuit board, wherein the lens is configured to receive the light rays and emits the light rays. A light adjusting device is disposed on the circuit board and surrounding the lens having the asymmetrical bat-wing candle power distribution. The light adjusting device includes an opening and the light adjusting device is configured to adjust the light rays through the opening to form an illumination region having a preset shape by adjusting a geometric shape of the opening corresponding to the lens having the asymmetrical bat-wing candle power distribution.