A soundproof material is provided with a first sound absorbing layer
arranged on a vehicle panel, a second sound absorbing layer closer to an
inner side of a passenger compartment, and an intermediate layer provided
between the sound absorbing layers. The intermediate layer is constituted
by two layers having a high-density layer and a low-density layer. The
air permeability of the intermediate layer is set lower than the first
sound absorbing layer and the second sound absorbing layer. The
intermediate layer is arranged in such a manner that the high-density
layer is adjacent to the second sound absorbing layer.