The　thermodynamics　and　dynamics　characteristics　of　solid　fuel　combustion　in　sintering　mixture　were　investigated　in　this　paper.　The　combustion　behavior　of　solid　fuel　in　mixture　was　analyzed　by　thermogravimetric　experiment,　the　solid　fuel　conversion　with　different　fuel　size　and　oxygen　concentration　was　got　by　the　experiment,　the　dynamic　parameters:　activation　energy　E　and　the　pre-exponential　A　were　theoretically　calculated　based　on　reaction　kinetics　model.　The　size　and　oxygen　concentration　were　also　the　influence　factors　of　combustion　rate.　The　empirical　data　can　be　used　to　guide　the　simulation　of　actual　sintering　process　and　the　dynamic　parameters　can　be　used　in　the　establishment　of　the　sintering　model.