The configurations of scramjet using solid fuel as propellant were summarized

and the progress and status of different configurations of scramjet using solid fuel propellant were elaborated

respectively. According to the operating feature of solid-fuel scramjet

solid-fuel dual-combustor scramjet and solid-fuel rocket scramjet

the advantages and existing problems of different configurations were analyzed

and some suggestions for further research were proposed. The research results reveal that though solid fuel can ignite and burn in supersonic combustor of solid-fuel scramjet

the combustion efficiency of propellant is low and the scramjet cannot operate for a long time. The solid-fuel rocket scramjet is beneficial to ignition and stable combustion of solid fuel

and can also operate for a long time. The solid-fuel rocket scramjet has a bright research and application prospect.