Abstract: A preparation method of a covalent organic framework material, including the following steps: using a first organic monomer and a second organic monomer as raw materials, and performing a condensation reaction under the catalytic action of a catalyst to obtain the covalent organic framework material; wherein the first organic monomer is a polyamine series; the second organic monomer is a polyaldehyde series. The covalent organic framework material provided by the invention is synthesized through catalysis by a specific catalyst provided in the invention. This specific catalyst can effectively reduce the temperature and time required for the condensation reaction, while also improving the yield of the covalent organic framework material.