A camera module and a molded circuit board assembly thereof, a semi-finished product of the molded circuit board assembly, and an array camera module and a molded circuit board assembly thereof, as well as a manufacturing method and an electronic device, wherein the camera module comprises at least one optical lens, at least one back surface molded portion, at least one photosensitive element and a circuit board. The circuit board comprises at least one substrate and at least one electronic component that is conductively connected to the substrate; a part of the non-photosensitive area of the photosensitive element is attached to the substrate back surface of the substrate, and the photosensitive area and another part of the non-photosensitive area of the photosensitive element correspond to a substrate channel of the substrate; the back surface molded portion is integrally bonded to at least one part of the area of the substrate back surface of the substrate; and the optical lens is held in the photosensitive path of the photosensitive element.