The　primary　sludge　is　operated　by　ABR　anaerobic　hydrolysis　acidification　process　to　generate　carbon　resource.　The　reactor　provides　stabile　acidogenic　performance　under　the　conditions　of　35°C,　HRT=28　h,　and　SRT=3　d　during　30　days.　ρ(SCOD)　and　ρ(VFAs)　of　effluents　reach　the　peak　values　at　1182　mg/L　and　602.8　mg/L　during　the　operating　time.　Result　shows　that　the　sludge　hydrolytic　acidification　system　can　successfully　achieve　the　accumulation　of　VFAs.　Retention　time　has　significant　impacts　on　the　carbon　accumulation　system.　Under　the　same　conditions,　the　increase　of　HRT　can　improve　the　accumulation　of　carbon,　however,　when　HRT　is　more　than　32　h,　the　carbon　resource　accumulation　slows　down.　When　SRT　is　5　d,　ρ(SCOD)　and　ρ(VFA)　are　up　to　1498　mg/L　and　895.3　mg/L;　When　the　SRT　increases　to　7　d,　the　acidogenic　performance　decreases.