Abstract: The re vi sed DL/T5178-2003Technical Specification for Concrete Dam Safety Monit oring has been implementing since June1,2003.This specification is an imp ortant technical standard for dam safety monitoring and basis to conform dam sa fety moni -toring to the standard.This paper,based on the dam status nationwi de,states the significance of implementing this standard,con-tent sig nifica nt revised and how to supervise its implementation to ensure dam safety.?