In order to achieve one-way absorber, a one-dimensional photonic crystal including magnetic material layer and metal layer is designed. The transmission properties of the structure are studied using a modified transfer matrix method. Based on the coupling of magnetic surface plasmonic resonances, the structure achieves perfect nonreciprocal absopbtion. For a special wavelength of 409.725 nm, the electromagnetic wave is totally absorbed from left incidence with incident angle of +45°, whereas it is totally reflected from right incidence with incident angle of -45°. The results are demonstrated through simulations based on finite element method.