A clothing treatment apparatus capable of enabling an orientation of a bag body and an orientation of an ozone supply apparatus to keep a desired relationship is provided. A clothing deodorizing apparatus comprises a bag body for accommodating clothing; an ozone supply apparatus for supplying air into the bag body; an introduction pipe for guiding the air with the ozone exhausted from the ozone supply apparatus into the bag body; a cylindrical part formed on the bag body and fixed with one end part of the introduction pipe; and an inserting port part formed on the ozone supply apparatus and configured to detachably install the other end part of the introduction pipe in a specified orientation.