Abstract: View of the large volume of the sampler used to detect the shrinkage temperature of the leather and the performance noise of the compressor and complicated operation , we have researched and produced the electric rectangular sampler, by using the new technology such as the slide rail mechanism and the octagonal blade edge cutting. It not only reduces the volume to one tenth of the traditional sampler, but also is easy to operate. It is also applicable to the preparation of rectangular specimens such as textiles and rubber, providing a powerful technique for detecting the performance parameters of such flexible materials.