An image building module includes an image builder, a signal-shielding flexible film, and a signal shielding cover. The image builder includes a first image capturing element and a processing chip. The first image capturing element is used for capturing a first image. The processing chip is used for processing the first image. The signal-shielding flexible film covers the processing chip. The signal shielding cover covers the image builder and the signal-shielding flexible film. The signal shielding cover has a first through hole exposing the first image capturing element.