The optical scanning endoscope (1) of the present invention has a control for emitting light (L) from the optical fiber (14) at the same phase of vibration as the optical scanning unit (2) that vibrates the optical fiber (14). Part (3), adjustment part (5) for adjusting the distortion correction amount based on the shape of the row of the irradiation position of light (L) on the subject (A), and light based on the adjusted distortion correction amount And a phase correction unit (6) for correcting the phase from which (L) is emitted.本発明の光走査型内視鏡（１）は、光ファイバ（１４）を振動させる光走査部（２）と、振動の同一の位相において光ファイバ（１４）から光（Ｌ）を射出させる制御部（３）と、被写体（Ａ）上における光（Ｌ）の照射位置の列の形状に基づいて歪み補正量を調整する調整部（５）と、調整された歪み補正量に基づいて、光（Ｌ）が射出される位相を補正する位相補正部（６）とを備える。
