A wearable electrode comprising: a garment including an outer member and a backing member configured to cover at least a part of an inner surface of the outer member; an electrode unit which is configured to come into contact with a living body clothed in the garment to acquire a biological signal emitted by the living body and which is attached to an opposite side of the backing member from the outer member; wherein the outer member and the backing member are connected to each other in a part other than a part of the backing member to which the electrode unit is attached; a wiring section disposed between the outer member and the backing member; a locking section which is electrically connected to one amongst the electrode unit and the wiring section, the locking section being provided with a convex section and formed of a material with conductivity; and a locked section which is electrically connected to the other one amongst the electrode unit and the wiring section, the locked section being provided with a concave section detachably locked to the convex section and formed of a material with conductivity; wherein, when the locking section and the locked section are locked to each other, the locking section and the locked section being configured to be electrically connected to each other; the wearable electrode being characterized in that it further comprises: a slit formed in the backing member, the convex section of the locking section being configured to be inserted into the slit; and a wire holding section having a loop shape and provided on either the outer member or the backing member above the slit at a position away from the electrode unit and configured to hold a connection wiring of the wiring section. a garment including an outer member and a backing member configured to cover at least a part of an inner surface of the outer member; an electrode unit which is configured to come into contact with a living body clothed in the garment to acquire a biological signal emitted by the living body and which is attached to an opposite side of the backing member from the outer member; wherein the outer member and the backing member are connected to each other in a part other than a part of the backing member to which the electrode unit is attached; a wiring section disposed between the outer member and the backing member; a locking section which is electrically connected to one amongst the electrode unit and the wiring section, the locking section being provided with a convex section and formed of a material with conductivity; and a locked section which is electrically connected to the other one amongst the electrode unit and the wiring section, the locked section being provided with a concave section detachably locked to the convex section and formed of a material with conductivity; wherein, when the locking section and the locked section are locked to each other, the locking section and the locked section being configured to be electrically connected to each other; the wearable electrode being characterized in that it further comprises: a slit formed in the backing member, the convex section of the locking section being configured to be inserted into the slit; and a wire holding section having a loop shape and provided on either the outer member or the backing member above the slit at a position away from the electrode unit and configured to hold a connection wiring of the wiring section. a slit formed in the backing member, the convex section of the locking section being configured to be inserted into the slit; and a wire holding section having a loop shape and provided on either the outer member or the backing member above the slit at a position away from the electrode unit and configured to hold a connection wiring of the wiring section.