The invention discloses a method for preparing integral macroporous monox, which belongs to a preparation technique of integral porous inorganic oxide. The method comprises the following process of utilizing reverse concentrated emulsions method to prepare integral macroporous organic template by using monomers of styrene and divinylbenzene, filling the SiO2 hydrosol in the integral macroporous organic template, the template can be removed via drying and roasting the filled integral organic or inorganic compound in 600 to 900 DEG C, thereby obtaining integral macroporous monox. The method hasthe advantages that the preparation process is simple and practical, and the integral macroporous monox has micron-sized macroporous passages communicating with each other, which is suitable for usingas catalyst carriers, adsorbing materials and parting materials.