To develop efficient Burning rate catalyst （BRC）， a key component for regulating solid propellant combustion performance， and to explore the role of single-atom catalysts， a Fe single-atom catalyst supported on porous carbon carrier （Fe-NC@PC） was designed and synthesized. The composition and morphology were thoroughly characterized by X-ray powder diffractometer （XRD）， X-ray photoelectron spectroscopy （XPS）， scanning electron microscope （SEM）， transmission electron microscope （TEM）， high-angle annular dark-field scanning transmission electron microscope（HADDF-STEM） and X-ray absorption fine structure （XAFS）. Moreover， the effect of Fe-NC@PC on thermal decomposition for energetic materials within solid propellant was investigated via thermogravimetric-differential scanning calorimetry （TG-DSC）. Results show that Fe atoms in Fe-NC@PC were anchored on the carrier surface via Fe-N bonds with the loading amount of 0.98%. Upon the addition of 5% Fe-NC@PC， the thermal decomposition peak temperature of 1，1-diamino-2，2-dinitroethylene （FOX-7）， cyclo-1，3，5，7-tetramethylene-2，4，6，8-tetranitramine （HMX）， hexanitrohexaazaisowurtzitane （CL-20） and Dihydroxylammonium 5，5’-bistetrazole-1，1′-diolate （TKX-50） decreased by 34.6， 9.4， 6.3 ℃ and 27.9 ℃， respectively， demonstrating clear catalytic effects. Additionally， the apparent activation energies were also altered.