The invention discloses a method for simultaneously testing stiffness, flexibility and drapability of a fabric. The method comprises the following steps: step one, tailoring a to-be-tested fabric intoa first rectangular sample and a second rectangular sample, and successively carrying out step two, step three, step four, step five and step six if i equals to 1, 2; step two, placing the ith rectangular sample on a fabric fixing device; step three, photographing the fabric by an image photographing device; step four, acquiring point cloud and a three-dimensional point cloud coordinate array byImageware software; step five, storing the three-dimensional point cloud coordinate array into a data file in an asc formate, and reopening the three-dimensional point cloud coordinate array in Imageware; step six, carrying out image and feature extraction in the Imageware software; and step seven, solving the flexural rigidity E and fabric draping coefficient of the to-be-tested fabric.