After Imam Reza’s martyrdom, his shrine was in the center of attention of the Sunnite governments established in Khorasan. Under the rule of Samanid and Ghaznavid dynasties, the agents of these two governments paid homage and sincerity to Imam Reza’s shrine. The tolerating behavior of Samanids and Ghaznavids towards Imam Reza’s shrine prepared the ground for the next measures under Saljuqids. The present study deals with an analysis of constructive measures in Imam Reza’s shrine through a descriptive-analytical method. This study has attempted to make use of historical sources and the remnants in Imam Reza’s shrine and in Astan Quds’s museum to present a historical, archeological, architectural and social study. This article aims at answering the following main question: “How was the behavior of Saljuqid kings and their associates towards Imam Reza’s shrine?” The results of the study suggest that the ground and milieu created by Samanid and Ghaznavid rulers caused Saljuqid great kings to have heartfelt sincerity towards Imam Reza's shrine. Besides, under Sultan Sanjar, the greatest numbers of constructions were done in that sacred place. Sultan Sanjar’s tolerating behavior towards the constructive measures of his Shiite vizier, Abu Taher Qomi, and the Shiite dynasty Kakuya led to the spread of affectionate and emotional Shiism among the women of the Saljuqid dynasty. Thus, these women, considering the cultural ground prepared paid special attention to Imam Reza’s shrine.