This invention provides a photographing module that at least includes a lens unit, an electrically controlled focusing mechanism, an elastic unit, a supporting base and a photosensitive device. A movable member of the electrically controlled focusing mechanism is electrically driven to move the lens unit attached therewith along an optical axis so as to perform a focusing function. The elastic unit is disposed with the electrically controlled focusing mechanism and has a plurality of bridge regions. Each bridge region has a plurality of radial segments which are connected together, so that they can evenly absorb accumulated stress coming from a distortion, a plane shift along the optical axis and a certain amount of tilt of the lens unit while it is being rotated to be disposed in the photographing module or during its other movements. The elastic unit effectively utilizes available space to lengthen the bridge regions so its spring constant can be effectively reduced.