A camera module is provided, including a lens driving mechanism, a lens unit, a circuit board, and an image sensor. The lens unit is disposed on the lens driving mechanism. The image sensor is disposed on the circuit board. The circuit board includes a metal member, an insulation layer, and a metal wire. The insulation layer is disposed between the metal member and the metal wire, and the metal wire is electrically connected to the image sensor. The lens driving module can drive the lens unit to move relative to the image sensor. The image sensor can catch the light through the lens unit.