The　decomposition　of　organic　macromolecules　in　sewage　currently　benefits　substantially　from　hydrolysis-acidification.　The　full　use　of　its　qualities　can　help　domestic　sewage　to　biodegrade　more　quickly,　which　promotes　the　subsequent　aerobic　reactions.　This　study　evaluated　the　hydrolysis-acidification　performance　of　granular　sludge　and　filler　in　residential　sewage.　Both　forms　were　highly　effective　at　producing　volatile　fatty　acids　(VFAs)　at　the　beginning　of　the　reaction,　but　the　granular　sludge　gradually　disintegrated　over　time,　particularly　at　low　temperatures.　The　production　of　VFAs　decreased　(68.08　mg/L),　and　the　effluent　dissolved　organic　nitrogen　(DON)　increased　(6.23　mg/L).　However,　the　effluent　of　fillers　remained　at　a　lower　level　(1.3　mg/L)　and　produced　more　VFAs　(74.13　mg/L).　High-throughput　sequencing　revealed　that　the　filler　included　a　greater　quantity　of　hydrolytic-acidifying　bacteria　than　the　granular　sludge,　which　resulted　in　higher　performance.　In　this　study,　the　optimal　form　of　utilizing　hydrolytic　acidifying　bacteria　was　discussed　to　provide　a　theoretical　basis　to　improve　the　full　utilization　of　organic　matter　in　domestic　sewage　and　the　removal　of　as　much　total　nitrogen　as　possible.