The bending behaviour of three types of warp-knitted fabrics was studied using the KES-FB pure bending tester. Among many bending mechanisms proposed to analyze the features of fabric bending curve such as linearity, asymmetry, and hysteresis, a geometrical approach is used to describe the bending properties of warp-knitted fabrics with the changes of the fabric type and heat-setting process. Correlation analysis was performed to relate the bending properties of warp-knitted fabrics with the structural parameters including areal density and thickness of fabrics. As a result, good correlation was obtained between bending rigidity for wale as well as course and structural variables such as weight per unit area and thickness of fabric.