This work demonstrates a universal approach, based on the self-assembly of block copolymers, for the synthesis of novel conjugated microporous polymers (CMPs) with bicontinuous mesostructures. Three hexaazatriphenylene (Aza)-fused CMPs (Aza-CMPs) with double diamond structures were synthesized. The study broadens the spectrum of bicontinuous porous materials and opens a new route for synthesizing CMPs with new topologies.