An image capturing device includes a holder, two camera lenses and two image assemblies. The holder has two surfaces, two through holes and two positioning sections. The two surfaces are opposite to each other. The two through hole extend from the first surface to the second surface. The two positioning sections are located on the second surface, and the two positioning sections respectively surround the two through holes. The two camera lenses are respectively disposed in the two through holes. The image assembly includes a circuit board and an image sensor. The image sensor has an image surface. The two image sensor is electrically connected to the circuit board. The positioning section is abutted against sides of the image sensor so as to position the image sensor, and thereby center of the image surface is located on central axis of the camera lens.