Today, maintenance of the structure's performance and its security against natural disasters such as earthquakes and severe winds are a major concern for engineers. This has been of great importance to the process of high-level construction and construction in seismic areas. For this reason, in recent years, there has been a lot of research on seismic control of structures. In the meantime, semi-active control systems can be considered as the evolving form of modern structural systems that are intelligent and adaptable to variations in the dynamic loads involved. These systems have mechanical properties (variable hardening and damping) that can be controlled at any given moment depending on the output response of the structure. In this paper, the purpose of designing a semi-active control system for structural models using a MR damper and one The controller is the damper parameters. Therefore, structural models equipped with MR dampers are modeled and a fuzzy controller is used to control it, which is used to effectively control the membership functions and different fuzzy rules. The results show that the use of MR damper for accelerated mapping with different frequency content reduces the structural change response and improves the seismic performance of the structure. The performance of the semi-controlling system is influenced by the location of the MR damper position and the deposition of the damper in the higher classes causes Further reductions in structural responses. Also, the performance of the semi-active and MR damper control system is influenced by the fuzzy controller parameters.