Introduction: Nowadays, tatal quality management is welcomed as the common language and enlightening means of all organizations trying to modify their prior approaches by implementing this management system. However, the in formation systems with all their faults have caused some problems in implementing this high quality system consequently, favourable or considerable results are achieved. 

Methods: This paper was done as a library and internet research lay the review of literature. It was attempted to show the role, importance and mechanism of providing a eorrect information system if different stages of total quality management from the beginnig up to the end. Furthermore, the significance and provision of correct information system in all 9 stages of FOCUS-PDCA were discussed. Review of literature: The related studies mostly reveal that the main reason for unfavourable outcome of total quality management in the failure either in data collection or in the presenttion of the results. Thus, the real nature and efficiency of this management system is not totally revealed.

Conclusion: FOCUS-PDCA is a suitalle strategy under the topic of total quality management which encourages. Personnel to Think systematically. Morover, considering the prinaples of TQM, the real promotion of procedures is facilitated by the provision of information. Hence, along with the implementation of total Qulality Management, the modificalion of information systems should be considered simultaneously. The modification of the information systems is required during the procen of promotion at the end. Of it. Modification is the only assisting means to demonstrate TQM and its output in a precise system. When the output, folloswing the procen, is explained by statistical and reliable data, one can discuss whether the procen of promotion is effective and in compliance with the needs of the clients.