Abstract: It is one of the important ways to produce fresh water through solar-driven evaporator. In order to improve the solar-driven evaporation performance of polyimide (PI) aerogel, PDA@BN-CNT/PI composite aerogel was prepared by adding dopamine-modified boron nitride (PDA@BN) and hydroxylated carbon nanotubes (CNT) through four-directional freeze-drying and imidization. The influence of PDA@BN and CNT on the morphology, structure, wettability and solar-driven evaporation of the aerogel were studied. The results indicate that PDA@BN-CNT/PI aerogel has good hydrophilicity and solar photothermal conversion performance. Moreover, it exhibits unique low bending tubular structure, which is conducive to promoting the transportation of water inside the aerogel and improving the performance of solar-driven evaporator. The aerogel exhibits high evaporation rate of 1.95 kg/(m²·h) under 2 kW/m² sun irradiation and excellent recycling performance, chemical stability and efficient wastewater purification ability.