The present invention discloses a miniature photographic apparatus applicable to an endoscopic device, and including a casing, at least one light source device and at least one viewing lens device. The casing is disposed at a front end of the endoscopic device. The casing includes an accommodating space. The light source device is disposed in the accommodating space, and emits at least one light and includes a first protecting layer at a front end of the light source device. The viewing lens device is disposed in the accommodating space and includes a second protecting layer at a front end of the viewing lens device. The second protecting layer is separated from the first protecting layer to prevent lights reflected by the second protecting layer from entering into the viewing lens device.