The Pd/γ-Al2O3 catalysts with different Pd content were prepared by impregnation, and effects of Pd content on hydrodeoxygenation and saturated hydrogenation performance over catalysts were studied by XRD, H2-TPR, BET and other analytical characterization techniques and a reaction system with methyl oleate as model compounds. The results showed that the proper Pd content can help to improve Pd dispersion in the support, and reduce the strength of the interaction of PdO-Al2O3. So hydrodeoxygenation and saturated hydrogenation performance of catalysts can be improved and hydrodeoxygenation way is easily carried out by decarboxylation or decarbonylation way; Catalytic hydrodeoxygenation and saturated hydrogenation conversion of 2%Pd/γ-Al2O3 is 100%, and its catalytic hydrodeoxygenation was performed according to full decarboxylation or decarbonylation way.