PROBLEM TO BE SOLVED: To provide an optical fiber scanning device having a narrow diameter which can perform scanning radiation with high accuracy.SOLUTION: An optical fiber scanning device 10 comprises an optical fiber 30 where a permanent magnet 31 is disposed and emits illumination light from a tip end part, on a hollow part on which a field generation unit 21U of a frame body 11S is disposed. The frame body 11S which is a regular square cross section of the hollow part comprises: a first frame body 11A on which a flat coil is disposed on a first surface 11SA and a second surface 11SB which are orthogonal to each other； and a second frame body 11B on which a flat coil is disposed on a third surface 11SC and a fourth surface 11SD which are orthogonal to each other, and being jointed to the first frame body 11A. The first surface 11SA to the fourth surface 11SD form an inner surface of the hollow part.【課題】高精度のスキャン照射を行う細径の光ファイバ走査装置を提供する。【解決手段】光ファイバ走査装置１０は、枠体１１Ｓの磁場発生ユニット２１Ｕが配設されている中空部に、永久磁石３１が配設されており先端部から照明光を出射する光ファイバ３０が配置されており、中空部の断面が正方形の枠体１１Ｓが、直交する第１面１１ＳＡ、第２面１１ＳＢに平面コイルが配設されている第１の枠体１１Ａと、直交する第３面１１ＳＣ、第４面１１ＳＤに平面コイルが配設されており、第１の枠体１１Ａと接合されている第２の枠体１１Ｂと、を具備し、第１面１１ＳＡから第４面１１ＳＤが中空部の内面を構成している。【選択図】図３
