Abstract: Abstract:In this paper,we discuss the necessity of studying knowledge-based decision support system,briefly introduce the architecture of DSS,and present a basic architecture of KB-DSS and its implementation techniques,on which a knowledge-based teacher manageraent DSS has been implemen-ted.KB-TMDSS provides managers with a data-structure-independence,non-procedure and like-English deductive query language.The experiment results show it is very effective.