Abstract: In order to achieve fabric drape shape of computer simulation, in this paper, the mechanical and basic structure parameter properties of fabrics which are directly affective factors for drape shape are given out by a large number of experiments, and receive a series of forecast equations about drape shape through multiple linear regression analysis. The regression equation are verified by the computer programming. The results showed that: fabric drape shape are closely related to the mechanical and basic structure parameter properties, especially the shear rigidity in the direction of 450, the interweave’s resistance, the thickness and latitude density, their differences will cause tremendous changes in appearance of fabric drape ,and influence the sense of overhanging beauty. The experimental equations can achieve fabric drape shape of computer simulation, and further validates the accuracy of the regression equation.