A dendritic bonding agent (DBA) that can coat ammonium perchlorate (AP) filler successfully is reported. The coating properties are characterized by scanning electronic microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Micro-infrared. DBA forms a viscous film on the surface of AP; the coating degree can be up to 47% from XPS analysis, the coating degree increases by increasing of CN group content. Micro-infrared analysis indicates that H-bond is formed between DBA and N—H groups, and it proves that DBA is available for coating AP.