A multi-mode portable apparatus is provided and includes an upper part, a base, a hinge assembly, and an antenna unit. The upper part includes a cover and a screen frame relative to the cover. The base includes a frame and a bottom cover relative to the frame, in which the bottom cover includes a metal covering part having a first slot and a second slot. The hinge assembly is connected between the upper part and the base thereby allowing the multi-mode portable apparatus to be capable of being flipped to operate in a laptop mode or a tablet mode. The antenna unit is disposed on the upper part, in which the antenna unit operates in at least one operating frequency band.