Disclosed is disclosure clothing treatment device capable of effectively preventing odour from reabsorbing to clothing. A clothing deodorizing device includes: a bag body for accommodating clothing； an ozone supply apparatus including an ozone generator and a blowing fan wherein the air supply fan operates to deliver the ozone generated by the ozone generator into the bag body by virtue of the flow of the air； and a control part for controlling operation of the ozone generator and the blowing fan. After performing deodorization operation that enables the ozone generator and the blowing fan to operate, the control part performs reabsorption preventing operation that enables the blowing fan to operate intermittently.
