Accessory for wiring duct and wiring duct using same

The utility model discloses a wiring duct accessory and a wiring duct using the same, the wiring duct accessory is connected between a wiring duct body and a cover plate, the upper part of the wiring duct accessory body forms an upper combination part, the lower part forms a third combination part, the upper combination part is composed of a first combination part and a second combination part, and the third combination part is composed of a third combination part and a fourth combination part. Wherein the first combination part is used for being embedded with the hook end of the body side combination part, and the shape of the first combination part is matched with that of the hook end; the second combination part extends upwards from the bottom of the first combination part to form an arc-shaped part which is opposite to the first combination part and is matched with the hook back of the body side combination part; the shape, size, and direction of the third coupling part are the same as those of the body-s