A ceiling fan comprises a disk-like stator having a fixed shaft at its center, an annular rotor provided in proximity to the periphery of the stator, a supporting frame fixed to the rotor and rotatably supported by the fixed shaft, a blade part fixed to the supporting frame, and a locking device having one end fixed to the supporting frame together with the blade part and the other end locked to the blade part. The blade part includes a root part fixed to the supporting frame, a blade part to which the locking device is locked, and a step part formed by bending and provided between the root part and the blade part. The blade part is not easily broken when a load is applied thereto, and even if it is broken, the blade part can be anchored to the rotor side whereby the safety of the fan can be kept.