Researches　on　reaction　kinetics　and　mechanism　are　crucial　to　the　application　of　hydrogen　production　technology　by　supercritical　water　gasification　of　coal　from　experiment　to　industrialization.　Based　on　the　migration　mechanisms　of　nitrogen　and　sulfur　in　the　process,　this　paper　developed　a　general　model　including　nitrogen　and　sulfur　to　study　the　generation　path,　consumption　path　and　reaction　rate　of　the　gasification　products.　The　parameters　of　the　kinetic　model　were　obtained　by　fitting　the　experimental　data　of　the　gasification　products,　and　the　activation　energy　of　each　reaction　was　obtained　by　the　Arrhenius　equation.　By　comparing　the　reaction　rates　among　the　various　reactions,　the　reaction　steps　for　controlling　the　production　or　digestion　of　the　product　could　be　obtained.　The　main　source　of　ammonia　production　was　pyrolysis　of　coal　followed　by　steam　reforming　reaction　of　fixed　carbon.　The　rate　of　ammonia　contribution　from　ammonia　synthesis　was　extremely　low　and　could　be　ignored.　The　consumption　path　of　ammonia　was　the　decomposition　reaction　of　ammonia　though　its　rate　was　also　slow.　The　pyrolysis　reaction　of　coal　was　the　main　source　of　hydrogen　sulfide,　followed　by　the　steam　reforming　reaction　of　fixed　carbon.　The　difference　of　the　concentration　and　reactivity　between　organic　sulfur　and　inorganic　sulfur　caused　the　difference　in　the　generation　source　of　hydrogen　sulfide　in　early　and　late　stage　of　the　gasification.　The　kinetic　model　can　predict　not　only　the　production　of　hydrogen,　methane,　carbon　dioxide,　carbon　monoxide,　ammonia　and　hydrogen　sulfide　under　different　operating　conditions,　but　also　the　products　for　different　coal　types,　which　may　provide　a　theoretical　basis　for　the　targeted　regulation　of　nitrogen　and　sulfur　elements　in　supercritical　water.　©　2020　Hydrogen　Energy　Publications　LLC