We tried a principle design for hydrotreating/ hydrocracking catalyst based on a new concept. Three orders of nano-pores combined with metal sites and acids can be availed to design concertedly-porous catalyst for hydrotreating /hydrocracking. Pores at the order of sub-nanometer are sensitive to molecular structure of reactants and products in hydrogen gas phase. Pores at the order of nanometer or tens nanometer are common to reaction system in gas-liquid mixed phase. Typical example of the improvement is as for deep hydrodesulfurization (HDS) and hydrocracking (HC) of diesel or gas oil (GO). The most typical result is (Ni-Mo)/(TiO2-Al2O3)-nanoporous Al2O3-USY catalyst. This three component catalyst works efficiently due to the concerted components. This effect was also confirmed by reaction test with model compound.