Solid propellant is the most important energy source for rocket, missile and other weapons to launch, and is the key material to realize the firing range and damage effect of weapons. In order to meet the requirements of weapon application, the overall requirements for the energy performance, combustion performance, mechanical performance, storage performance, safety performance and process performance of solid propellant are put forward. Therefore, there are many challenges to fully meet the requirements of solid propellant and apply it to weapons. In recent years, with the development of material science, computational science and experimental technology, there are many reports about the composition, structure, performance research and prediction of solid propellants. This book reviews the research progress in solid propellant binder, energy performance prediction and thermodynamic calculation, combustion gas flow and combustion performance regulation, material storage performance research and safety performance simulation, and discusses the key development direction. The summary and prospect of this paper are expected to provide guidance, reference and inspiration for relevant researchers to carry out the research of solid propellant. This book is suitable for researchers, technicians and students who are engaged in solid propellant, weapons, chemistry and other work to read, for reference in specific research work. Due to the limited level of editors and short time, some problems are inevitable. We regret for some problems.