A powder removing apparatus includes a box, a stage moving mechanism, and a powder removing processing mechanism. The box has a main body with an opening and a stage movably provided in the main body. The box is capable of accommodating a molded object and non-bonding powder so as to arrange the molded object, which is formed using powder according to a rapid prototyping technique, on the stage together with the non-bonding powder. The stage moving mechanism is capable of moving the stage upward relative to the main body inside the main body. The powder removing processing mechanism is configured to remove the non-bonding powder existing around the molded object extruded by a driving operation of the stage moving mechanism via the opening.