Preparation process of modified carrier and catalyst was studied. The LH-02 second-stage hydrodesulfurization catalyst was developed from aluminum hydrate xerogel, cobaltous nitrate and ammonium molybdate which all served as main materials. 采用氢氧化铝干胶、硝酸钴和钼酸铵为主要原料,通过载体改性和催化剂的制备工艺研究,开发了LH-02裂解汽油的二段加氢脱硫催化剂。