A hierarchical porous material consists of multistage porous materials, comprising a material body, the body is formed by a pore cavity graded according to the pore size of the material and a cavity wall surrounding to form the pore cavity. The pore cavities are uniformly distributed. The characteristics are as follows. A lower-level pore cavities are disposed on the cavity wall of an upper-level pore cavity formed by surrounding a three-dimensional space. Each level of pore cavities are mutually connected and the pore cavities within same level are also connected with each other. The uniform distribution of the pore cavities means that similar amount of pore cavities are distributed under any unit volume of the hierarchical porous material. The hierarchical structure of the cavity of the material enables it to meet a wide range of functional requirements. The uniformity of the distribution of pores of hierarchical porous materials is measured at a small unit volume scale, and the hierarchical porous material is highly uniform, thus ensuring the uniformity of various properties of the hierarchical porous material.
