Although the Sassanid rule had long been based on Zoroastrianism and opposed the rise and influence of other religious minorities in the hierarchy of power, Nestorian Christians in this period, as a result of Khosrow's interaction with Byzantium and Christians within the imperial realm, They entered the equations of power in the administrative hierarchy of the Sassanid Empire. With this introduction, the present study seeks to investigate the role of Nestorians in the time of Khosrow Parviz and how to play their role in the administration of the Sassanid territory, by describing and analyzing source data, and seeks to determine the extent of their impact on the events of this period, in To clarify the result of Nestorian activity and the influence of internal and external events and their impact on Khosrow II's decisions. Therefore, why and how the Nestorians played a role in the administration of the Sassanid territory is a question that arises here and the hypothesis of this study indicates the influence of this religious group in the Sassanid court who were able to be effective in many events of this period and many events inside And outside the Sassanid realm, as a result of the decisions that Khosrow imposed on them, to accept the effects.