Disclosed herein are a light source module and an electronic device using the same. The light source module is disposed in a housing component of the electronic device and includes a light source and a light guide element having a light-entering surface, a light-departing curved surface and a light-reflecting curved surface. The light-entering surface receives the light from the light source. The normal line directions of the light-departing curved surface are approximately perpendicular to the normal line direction of the light-entering surface. The light is reflected by the light-reflecting curved surface and then leaves the light guide element in the normal line directions of the light-departing curved surface.