"Wrinkle" is one of the important factors to evaluate the appearance of trousers. This paper describes the application of digital image processing to the grading (from grade 1 to grade 5) of trousers wrinkle. After the analogue image of wrinkle photographed by CCD camera changed the digital image at A/D converter of the experimental image processing system, the flattening processing and the gray-scale transformation processing were done about the digital image. And the grades of trousers wrinkling were analyzed using a texture analysis technique. As the result, there is a good agreement between the grades of wrinkle predicted by the texture analysis and the evaluated grades by the specialists.