The up-to-the-minute progress of lead-free combustion catalysts used in solid rocket propellant is reviewed. These catalysts include bismuth compounds,energetic lead-free combustion catalyst,carbon fiber and lithium fluoride. Bismuth compounds,especially,organic aromatic acid salts are becoming the hotspot of research. Energetic combustion catalysts have attracted more and more attention. Carbon fiber and lithium fluoride are all high effective and nontoxic combustion catalysts. In this paper,the application characteristics and development prospect of these catalysts are analyzed.