Model checking is an algorithmic technique for checking if a concurrent system satisfies a given property expressed in an appropriate temporal logic. LTLC(linear temporal logic with clocks) is a continuous-time temporal logic proposed for the specification of real-time systems. It is a real-time extension of the temporal logic LTL. In this paper, the model checking problem for LTLC is discrssed and a reduction from LTLC model checking to LTL model checking is presented. This reduction will enable us to use the existingLTL model checking tools for LTLC model chcking.Owing to the to the fact LTLC canexpress both the proerties and implementations of real-time sys,the LTLC modelchecking procedures can be used for both the prperty verication and the refinement verification for real-time systems with finite locations.