This device for recovering the bulk of a nonwoven fabric by heating the nonwoven fabric by blowing hot air thereon is characterized by being provided with: case units (30, 40) in which a conveyance space is formed through which the nonwoven fabric is conveyed; a heating mechanism which has jet openings (16b, 16d) for jetting hot air into the conveyance space from one side to the other side in the conveyance direction of the nonwoven fabric in the conveyance space, and has emission openings for emitting, from the conveyance space, the hot air which flows along the conveyance direction while contacting one of the two surfaces of the nonwoven fabric; and deformation mechanisms (12c, 12e) which deform the nonwoven fabric discharged from the case units (30, 40) such that one side of the woven fabric is convex.
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