The present invention relates to an electric bed combining mattress in which a bed is segmented and folded corresponding to human joints. The present invention includes: a frame part comprising a plurality of segment frames foldably connected so as to form an inclination angle with adjacent segment frames； a mattress part mounted on the frame part； a drive part configured to drive the segment frames so that the segment frames are folded； and a support part configured to support the lower portion of the frame part. Thus, the drive part is provided only to a lower region of a fixed frame, and the drive part is not exposed to lower portions of upper and lower body frames the angles of which are adjusted, so that danger of causing a safety accident is decreased, and appearance can be improved.
