Catalytic hydrogenation of benzaldehyde using supported noble metal catalysts is an environmentally friendly production route. However, the stability and cyclability of these catalysts still need to be improved. In this work,Pd/SiC catalyst with the Pd mass fraction of 1% was prepared by a liquid phase reduction method, and the catalyst was found to have good catalytic performance. Under the reaction condition of 60 ℃, 0.5 MPa H2 and 30 min, the benzaldehyde conversion can reach 100%, and the phenyl methanol selectivity is greater than 99%. The TEM and XRD results show that the average diameter of the Pd particle is 4.8 nm. The XPS results show that the electron binding energies of Pd0 3d5/2 and Pd0 3d3/2 are significantly reduced, indicating that Pd obtained electrons from SiC. The in-situ FTIR results show that the adsorption and activation of benzaldehyde occur on the surface of SiC. Therefore, a plausible mechanism was proposed to describe the catalytic hydrogenation mechanism of benzaldehyde on Pd/SiC. During the catalytic reaction, H2 was dissociated on the surface of Pd particles and benzaldehyde was adsorbed and activated on the SiC surface, then dissociated hydrogen species spilled over to the SiC surface and reacted with the activated benzaldehyde there. Both the metal and carrier in Pd/SiC catalyst can be easily recycled, therefore it is an environmentally friendly hydrogenation catalyst.