Embodiments provide a charging and discharging apparatus and a terminal. The charging and discharging apparatus includes a charging and discharging interface and a interface wire; the charging and discharging interface includes a charging and discharging circuit; the charging and discharging circuit includes a battery connection end, a current input end, and a current output end; one end of the interface wire for external connection is electrically connected to the battery connection end, and the other end is connected to a battery of a first terminal; the current input end is configured to be connected to a current output end; the second charging and discharging apparatus is electrically connected to a second terminal; the current output end is configured to be connected to a current input end. Embodiments are used to realize mutual charging between terminals.