A camera module, comprising a lens, a driving member, a photosensitive chip and a limiting element, wherein the photosensitive chip is a Bayer array sensor, the photosensitive chip comprises a plurality of pixel areas that are arranged in rows and columns, and each pixel area comprises four sub pixel areas (401, 402, 403, 404), wherein the lens is connected to the driving member, and the driving member is configured to drive the lens to switch among a first position, a second position, a third position, and a fourth position relative to the photosensitive chip; and the driving member is a miniature linear motor; characterized in that: the lens is in movable fit with the photosensitive chip by using the limiting member, the limiting member comprises a limiting base and a connecting part, and the limiting base or the connecting part is connected to the driving member; the limiting base is provided with a first limiting groove, a second limiting groove, a third limiting groove, and a fourth limiting groove that communicate with each other such as to form a movable space in which the connecting component can move and is in limiting fit with the above four limiting grooves; the second limiting groove is connected to the third limiting groove, the first limiting groove is located on one side along a distribution direction of the second limiting groove and the third limiting groove, the fourth limiting groove is located on the other side along the distribution direction, the first limiting groove is connected to the second limiting groove, and the fourth limiting groove is connected to the third limiting groove; in a case that the connecting part is limited in the first limiting groove, the lens is at the first position, light incident from the lens forms a first image in a first sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the second limiting groove, the lens is at the second position, the light incident from the lens forms a second image in a second sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the third limiting groove, the lens is at the third position, light incident from the lens forms a third image in a third sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the fourth limiting groove, the lens is at the fourth position, light incident from the lens forms a fourth image in a fourth sub pixel area of the photosensitive chip; contents of the first image, the second image, the third image and the fourth image are the same, and equivalent sub pixel areas of the first sub pixel area and the second sub pixel area, the third sub pixel area and the fourth sub pixel area in one pixel area are four sub pixel areas in the pixel area. the lens is connected to the driving member, and the driving member is configured to drive the lens to switch among a first position, a second position, a third position, and a fourth position relative to the photosensitive chip; and the driving member is a miniature linear motor; the lens is in movable fit with the photosensitive chip by using the limiting member, the limiting member comprises a limiting base and a connecting part, and the limiting base or the connecting part is connected to the driving member; the limiting base is provided with a first limiting groove, a second limiting groove, a third limiting groove, and a fourth limiting groove that communicate with each other such as to form a movable space in which the connecting component can move and is in limiting fit with the above four limiting grooves; the second limiting groove is connected to the third limiting groove, the first limiting groove is located on one side along a distribution direction of the second limiting groove and the third limiting groove, the fourth limiting groove is located on the other side along the distribution direction, the first limiting groove is connected to the second limiting groove, and the fourth limiting groove is connected to the third limiting groove; in a case that the connecting part is limited in the first limiting groove, the lens is at the first position, light incident from the lens forms a first image in a first sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the second limiting groove, the lens is at the second position, the light incident from the lens forms a second image in a second sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the third limiting groove, the lens is at the third position, light incident from the lens forms a third image in a third sub pixel area of the photosensitive chip; in a case that the connecting part is limited in the fourth limiting groove, the lens is at the fourth position, light incident from the lens forms a fourth image in a fourth sub pixel area of the photosensitive chip; contents of the first image, the second image, the third image and the fourth image are the same, and equivalent sub pixel areas of the first sub pixel area and the second sub pixel area, the third sub pixel area and the fourth sub pixel area in one pixel area are four sub pixel areas in the pixel area.