CONTEXT:　Composting　livestock　manure　in　suitable　areas　near　farmlands　is　important　for　the　application　of　livestock　manure　to　farmlands　and　the　realization　of　resource　utilization　of　livestock　manure　and　crop-livestock　integration.　However,　few　studies　have　focused　on　selecting　suitable　sites　for　livestock　manure　composting.　OBJECTIVE:　To　process　and　evaluate　the　spatial　clustering　of　farmland　via　six　machine　learning　methods,　analyze　the　priority　and　limiting　factors　of　suitable　site　selection　for　livestock　manure　composting,　and　determine　suitable　sites　for　livestock　manure　composting　and　the　annual　amount　of　livestock　manure　composting　in　three　scenarios.　METHODS:　This　research　investigated　the　spatial　clustering　of　farmlands　by　using　six　machine　learning　methods.　Then,　a　priority　and　limitation　analysis　of　suitable　sites　for　livestock　manure　composting　was　conducted,　and　suitable　sites　for　livestock　manure　composting　and　the　annual　amount　of　livestock　manure　composting　in　three　scenarios　were　documented.　RESULTS　AND　CONCLUSIONS:　Results　indicated　that　the　algorithm　called　balanced　iterative　reducing　and　clustering　using　hierarchies　could　effectively　identify　uneven　spatial　clusters　of　farmlands　in　hilly　areas.　A　total　of　114　suitable　sites　for　livestock　manure　composting　were　identified　based　on　the　priority　and　limitation　analysis.　Then,　the　spatial　association　relation　between　suitable　sites　for　livestock　manure　composting　and　farmlands　were　established.　Finally,　the　annual　amount　of　livestock　manure　composting　at　114　suitable　sites　for　livestock　manure　composting　was　estimated　as　pig　manure　equivalent　in　the　three　scenarios.　SIGNIFICANCE:　These　findings　have　significant　implications　for　promoting　the　resource　utilization　of　livestock　manure　and　crop-livestock　integration.　The　results　also　help　to　improve　the　utilization　rate　of　livestock　manure,　reduce　the　economic　cost　of　applying　livestock　manure　to　farmland,　and　alleviate　the　environmental　pollution　risk　of　livestock　manure.　In　addition,　the　results　have　good　application　for　the　utilization　of　livestock　manure　and　the　layout　planning　of　livestock　and　poultry　breeding.