In　the　present　of　microscopic　imaging　technology,　both　the　large　imaging　field　of　view　(FOV),　and　high-resolution　are　required.　The　Fourier　ptychographic　microscopy　(FPM)　does　not　need　to　move　the　sample　and　can　keep　the　original　FOV　unchanged.　It　can　expand　the　frequency　bandwidth　and　reconstruct　high-resolution　intensity　and　phase　images　by　using　the　angle　diversity　and　synthetic　aperture.　It　has　a　very　important　application　prospect　in　the　field　of　biomedical　detection.　However,　the　LED,　used　as　the　illumination　source　in　the　FPM,　is　an　extended　light　source,　and　the　light　emitting　unit　with　a　certain　size　will　cause　the　image　blurring.　Therefore,　a　reconstruction　algorithm　based　on　Lucy-Richardson　(L-R)　deconvolution　is　proposed　in　this　paper.　The　experimental　results　show　that　the　proposed　algorithm　can　solve　the　problem　of　image　blurring　in　FPM　imaging　and　improve　the　imaging　quality.　©　2020　SPIE.