Based on analyzing characteristics of five kinds of energetic materials including nitratoethylnitramine（NENA），hexanitrohexaazaisowurtzitane（CL-20），furazan compounds，zole nitrogen-rich compounds and hydrogen storage alloy，energetic level of NEPE solid propellant composed of normal(or energetic) binder/energetic plasticizer/high energy density material/metal incendiary agent was calculated with the code based on the minimum free energy method. The technical routes and consideration of novel high energy solid propellants were explored. The effects on energetic properties resulted from these approaches were discussed. Eight methods of forming high energy propellant were supplied.