To provide an electric wire connection apparatus in which repetitive use is possible while being able to release certainly a hooking of an electric wire with comparatively small power.

A terminal section 20 is produced by forming a bending piece 23 at an end of an electric conduction piece 21 of a shape of a plate arranged along an insertion direction of the electric wire 2 and bent almost perpendicularly in it, and a locking piece 22 which sandwiches the electric wire 2 with the electric conduction piece 21 bending partially the end of the bending piece 23 in the electric wire insertion direction. The terminal section 20 concerned is contained in a terminal case 10 which has a terminal receipt section 11 inside, and an electric wire insertion opening 12 which communicates with the terminal receipt section 11 is prepared in the side wall. At this time, the terminal section 20 is contained so that a sliding is possible to an opposite side to a release opening 13 in parallel direction with the electric wire insertion direction axis, without deforming the above locking piece 22 in the direction to the electric wire insertion. The terminal section 20 is enforced to the direction of the release opening 13 by a returning means, such as a coil spring 31.