A supporting bracket is suitable for standing on a working platform and adapted to hold an electronic device having a screen and provide illumination. The supporting bracket includes a base, a supporting arm apparatus, and a lighting device. The base is suitable for being fixed to the working platform. The supporting arm apparatus has a first segment and a second segment. One end portion of the first segment is connected to the base. The first segment is able to rotate relative to the base. One end portion of the second segment is connected to the other end portion of the first segment. The other end portion of the second segment serves to hold the electronic device. The second segment is able to rotate relative to the first segment. The lighting device is fixed to the supporting arm apparatus to provide illumination.