Chapter 1 is the preface,introducing the motive,purpose,scope and research methods of this study. Chapter 2 analyzes the contractual rights and obligations in the phase of studying at school and serving in voluntary soldiers service contracts.The author further defines the legal relationship between voluntary soldiers and a nation as an administrative contract,and introducing the similarities and dissimilarities in similar contracts. Chapter 3 focuses on contractual dispute over voluntary soldiers service contracts.The author classifies administrative behaviors into two types:one that results from contractual rights and obligations,and the other on that results from contract outside. Chapter 4 first introduces the internal and external administrative remedies for contractual disputes,and then analyzes the differences between practices and theories. Chapter 5 is the conclusion,summarizing the disputes and improvement advices for legislators to amend related laws and regulations.