The　KBiFe2O5　(KBFO)　compound　was　synthesized　by　using　a　conventional　solid-state　reaction　method　and　its　structural,　optical,　electrical,　and　magnetic　properties　were　thoroughly　gone　through.　It　was　found　that　KBFO　possessed　a　monoclinic　structure　with　P2/c　space　group　and　could　be　prepared　within　the　calcination　temperature　range　from　1023　K　to　1073　K.　No　structural　transformation　was　approved　from　room　temperature　to　the　decomposition　temperature　for　KBFO.　A　broad　absorption　band　at　the　range　300-650　nm　and　the　optical　band　gap　of　about　1.76　eV　were　approved.　Dielectric　property　measurements　revealed　a　Maxwell-Wagner　type　dielectric　dispersion　for　KBFO　and　approved　the　magnetoelectric　effect.　An　evident　photoelectric　response　with　the　Voc　and　Isc　of　around　0.5　V　and　20　nA　was　obtained.　It　was　presented　that　at　low　temperatures　a　weak　ferromagnetism　was　verified　by　the　ferromagnetic　hysteresis　loop　due　to　the　canting　of　the　magnetic　moments　of　G-type　antiferromagnetic　order　in　KBFO.　In　summary,　the　multiferroicity　in　KBFO　were　approved　experimentally　and　could　be　regarded　as　a　potential　candidate　for　the　ferroelectric　photovoltaic　applications.　(C)　2017　Elsevier　B.V.　All　rights　reserved.