Developing software f o r distributed Computing systems is challenging due t o lack of effective software development methodologies and iools. In particular, because many errors in ihe source code can be traced to the errors in the requiremenis specification, it is especially important to have effeciive verification techniques f o r the requiremenis specification. In this paper, an approach io verificaiion of objeci-oriented requiremenis specification (OORS) in software development for distribuied compuiing systems is presenied. In our approach, ihe requirements specification generated by object-oriented analysis is described using a formal specification language, which is transformed into an informaiion tree. Then, the completeness and consistency of the requirements specification ezpressed in terms of the informalion tree is verified b y comparing it with the original requiremenis staiement.