Fabric membrane structures which are also called textile or tenet structures, are subset of space structures. The use of these structures has become increasingly widespread for their lightweight, transparency, cost-effectiveness, flexibility and the creation of beautiful and elegant forms. Unlike concrete and metal structures, the forces entering in the fabric structures transferred only through tension to its other elements since they have a membrane molding function; that is, it is impossible to tolerate bending and torsion anchors, shear forces and tension forces on the fabric. Therefore, the shape of the structure should be chosen in a way that only tensile forces can be developed in the structure and stresses are created uniformly. Due to the light weight of fabric structures, these structures are only designed for wind and snow load. Design and analysis of fabric structures are time consuming and complex due to both their geometry and their nonlinear behavior. Hence, the purpose of this study is to analyze and survey these structures under wind loading to provide a guide for designers of these structures. We first provide a brief introduction to fabric membrane structures. Then we describe the designing process of these structures. Following that, 75 models of Hypar square structures that were loaded according to Iranian National Building Code, Part 6 for wind loads, are considered. The results show the effect of increasing the dimensions and height differences on the main stresses and the global deformations of structures constructed under the influence of wind load.