Abstarct: Human need for suitable and sufficient spaces for living and working on the one hand and population density and increasing land prices and providing urban services such as water, electricity, etc., and also prevent the longitudinal expansion of cities on the other hand the use of tall buildings And towers. In Iran, the construction of tall buildings has been on the rise for several years, considering that the science of designing and constructing tall buildings and its structural systems in Iran is almost a nascent science, useful and comprehensive information about With structural and seismic behavior and properties, tall buildings, especially interconnected buildings, are not. Therefore, it seems that research and presentation of a series of efficient and optimal engineering and structural principles in this field is necessary in order to decide on the design of tall buildings,deside better and more efficient and make more realistic engineering judgments for it. For this purpose, with the help of ETABS2019 computer software, modeling and analysis operations were performed on the twin towers connected by multiple Sky_Bridges in order to more accurately investigate the seismic responses of this structure against lateral forces, especially earthquake force. This analysis is baxsed on concrete regulations ACI318-2014 and Iranian seismic design regulations (Standard 2800 - Fourth Edition) and in the form of five different modeling modes, including non-connection of two towers to each other, connection by concrete beams with Proportional dimensions (standardized), deep concrete beams, concrete shear wall and steel truss are modeled and analyzed by spectral dynamic linear method and nonlinear dynamic time history method. Results obtained in linear method, connection of towers Ability to reduce In the drift of the stories, the displacement of the stories and the axial force of the columns. The use of harder members such as shear walls and deep concrete beams has increased the overturning moment and weaker members such as steel trusses and standardized beams have reduced it. In all joints, connection by concrete shear wall compared to Other connection modes have been more efficient and effective. In the nonlinear method, it was also observed that the use of concrete shear wall to connect the towers had the greatest effect on the reduction in the drift of the stories, especially in the upper stories of the towers, and in the displacement of the end stories, especially the last story. The use of harder elements has also increased the baxse shear and overturning moment. In this case, the connection by concrete shear wall is more optimal than other connection cases.