Chiral　hybrid　perovskites　(CHPs)　have　been　regarded　as　promising　candidates　for　developing　chiroptoelectronics　applications.　However,　circular　dichroism　(CD),　as　one　of　the　most　important　characteristics　to　evaluate　the　chiroptical　activity,　remains　at　a　comparatively　low　level　in　CHPs　compared　to　other　chiral　materials,　which　hinders　the　successful　applications　of　CHPs　in　state-of-the-art　spin-polarization.　Hence,　exploring　new　methods　for　enhancing　CD　in　CHPs　is　urgently　needed　and　remains　challenging.　Herein,　enhanced　CD　response　has　been　successfully　realized　via　constructing　carboxylic　hydrogen　bonding　in　chiral-achiral　mixed　cations　perovskites　(R/S-PPA)2(ABA)PbBr5　(2R/2S)　(PPA　=　1-phenylpropylamine,　ABA　=　4-aminobutyric　acid).　Compared　with　the　prototype　(R/S-PPA)PbBr3　(1R/1S),　2R/2S　provide　intimate　connections　between　organic　units　and　inorganic　parts　via　carboxylic　hydrogen　bonding　N-H　&　ctdot;O　bridge,　contributing　new　chirality　transfer　paths.　A　larger　inorganic　skeletons＇　helicity　in　2R/2S　predicts　a　high　degree　of　chirality　transfer.　Thus,　2R/2S　exhibit　significantly　enhanced　CD　response　with　an　anisotropy　factor　amplified　by　an　order　of　magnitude.　Finally,　bright　blue　circularly　polarized　luminescence　applications　are　achieved　in　2R/2S.　This　work　systematically　investigates　the　correlation　between　CD　and　hydrogen　bonding　interaction　in　CHPs,　meanwhile　providing　a　new　avenue　to　develop　the　application　potential　of　chiral　materials　in　chiroptoelectronics.