In　this　study,　a　catalytic　reduction-in-tube　solid　phase　microextraction　coupled　with　capillary　liquid　chromatography　(CR-IT-SPME-CLC)　system　was　developed　for　rapid　analysis　of　dinitropyrene　isomers　(DNPs).　Pt/Al2O3　and　ammonium　formate　were　used　as　catalyst　and　hydrogen　donor　respectively,　and　three　DNPs　were　reduced　efficiently　by　catalytic　hydrogenation　at　95　degrees　C.　A　solid　phase　microextraction　monolithic　column　embedded　into　nanomaterial　with　uniform　distribution　of　reduced　graphene　oxide　and　good　permeability,　which　was　prepared　using　self-made　capillary　rotating　device　by　optimizing　the　composition　of　the　pre-polymerization　solution.　For　highly　efficient　extraction　of　three　dinitropyrene　reduction　products,　desorption　solution　of　solid　phase　microextraction　was　optimized,　and　the　extraction　efficiency　was　80.　47%　-　93.　37%.　Capillary　chromatography　column　was　packed　with　C-18　particles　(5　mu　m)　at　high　chromatographic　pump　pressure,　and　a　capillary　liquid　chromatography-laser　induced　fluorescence　detection　system　was　established.　Complete　separation　of　three　diaminopyrenes　was　achieved　in　10　min　by　optimizing　the　chromatographic　separation　conditions.　The　proposed　method　is　simple,　rapid　and　sensitive　for　the　analysis　of　DNP　isomers　among　nitropolycyclic　aromatic　hydrocarbons.