To provide a fan structure for a vehicle capable of attaining both prevention of fan lock due to freezing and improvement of noise and vibration performance.

A shroud ring section 10 for a fan shroud 2 is formed to enclose an outer periphery of a fan 1, a stepped portion 13 opened outward in an almost concave shape is formed in a lower part of an inner side 10a of the shroud ring section 10, a porous member 14 having a connection surface 14a continuous to an opening edge 13a of the stepped portion 13 is provided in the stepped portion 13, and the porous member 14 is made to be a part of the inner side 10a of the shroud ring section 10.