To provide a device for sorting and cutting off when a material having a shorter length than a standard is included in cold straightening working and cold cut-off of a seamless steel pipe and a steel bar.

The sorting and cutting-off machine for carrying out work for measuring length, discriminating the short length material and a standard length material and sorting automatically comprises a conveyance table 5 for conveying the material to a cutting-off machine 4, a machine 2 for measuring the length of the material disposed within the conveyance table and the cradle 3 for stocking the random length material disposed between the conveyance table and the cutting-off machine, respectively. The sorting and cutting-off machine when the material having a shorter length than a standard the material to be cut off is dropped to a cradle when a length measuring machine 2 detects the material having a shorter length and passed on the cradle and sent to the cutting-off machine as it is when the machine 2 detect a standard length material.