Abstract:Database system is the core part of data storage and processing in the current information systems.Attacks towards the database systems will directly result in the leakage of sensitive or private data.Research on the theory and techniques of database security is a basic requirement of database protection.By surveying on the present status and developments of the database security,we conclude that the gap between overseas and China is narrowing now,and the changing and developing of the database technology is providing a great opportunity for the database security researcher in China.Several suggestions and propositions are promoted to improve the researches in China.