The invention relates to a preparation method for a hierarchical porous integral material containing polymers of covalent organic frameworks (COF). The method comprises the specific steps that the polymers of the covalent organic frameworks, a compound (functional monomer) containing epoxy functional groups, a compound (functional monomer) containing amidogen functional groups, a pore-foaming agent and the like are mixed and subjected to oscillation dispersion, an epoxy ring-opening polymerization reaction is conducted at certain temperature, and the integral material of the hierarchical porous (micropore-mesoporous-macropore) structure can be prepared. The preparation method has the advantages of being mild in condition, efficient, controllable and the like. In addition, according to different application requirements, different polymers of the covalent organic frameworks can be selected, or the mixing amount of the polymers of the covalent organic frameworks can be adjusted, and a series of hierarchical porous integral materials with different physical and chemical properties are prepared.