As one of the most important and primary sources in historicalstudies, “Documents” have key role in reflecting political, social and cultural Life of their own time. Basically, these sources are invaluable for two groups: for ordinary people in terms of informations contained in them, for researchers in their researches. By the formation of human communities, primitive man always has been in search of his identity and trying to differentiate himself from the other. As the time went by and the human communities became more populated, identification became one of the most prominent aspects of the society, and various types of methods were exploited in which issuing identity documents was very decisive. Creating identity, followed by the concept of identity documents, was the production and the result of the second half of the first modern Pahlavi government (1931-1942). Through all kinds of identity documents, marriage contracts have a lot of values from historical and juridical points of view. In the second half of the Reza Shah h’s government, following this project, all the authorities who were in charge of marriage offices were obliged to clarify the husband and wife identity. As a result, the historical process of continuity and evolution in marriage contracts were considered in consolidation of Iranian identity.