PROBLEM TO BE SOLVED: To provide a fan piece which can be commonly used for a plurality of fan pieces constituting a fan portion and in which one side side and the other side side can be aligned in a state where the fan is closed. Provided is a folding fan capable of having a plurality of fan pieces having common specifications and aligning one side and the other side of the plurality of fan pieces in a closed state. SOLUTION: An engaging piece 5 extending toward a required 4 side is formed on a first fan plate forming the front surface of each fan piece 3. An arc-shaped slide recess 6 centered on the main 4 is formed on the second fan plate forming the back surface of each fan piece 3. The slide recess 6 extends continuously from one side of the fan piece 3 to the other side of the fan piece 3. The engaging piece 5 of each fan piece 3 engages with the slide recess 6 of the fan piece 3 adjacent to the front side of the fan piece 3. Further, the engaging piece 5 of the fan piece 3 adjacent to the rear side of the fan piece 3 engages with the slide recess 6 of each fan piece 3. [Selection diagram] Fig. 1
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