Abstract: A method to measure the fabric drape based on upward projection was proposed.The upward projected image of the draped fabric edge was collected by the CCD camera.The image processing and contour detection were erformed and all necessary data of the draped fabric edge were obtained.Rectified the data which were distorted because of the projection,calculated the parameter of the fabric drape.Test the fabric by the traditional fabric measurement method based on downward projection and got the experiment data.The two different experiment results indicated the new testing method based on the upward projection can avoid the unavoidable error,which is occurred when the traditional downward projection testing method is used to measure the light,thin and soft fabric owing to the gauffer being turned under the supporting disc and is sheltered by it.