The invention discloses a segmental roller of textile machinery. The segmental roller comprises an upper roller and a lower roller, wherein the upper roller comprises a first drive roller and a first transmission roller. The first drive roller is fixedly connected with an upper transmission shaft, and the first transmission roller is movably connected with the upper transmission shaft. The lower roller comprises a second drive roller and a second transmission roller. The second drive roller is fixedly connected with a lower transmission shaft, and the second transmission roller is movably connected with the lower transmission shaft. Pressure sensors are respectively arranged on the first transmission roller and the second transmission roller. The segmental roller can detect moving speed of slivers, prolongs service life, and improves production efficiency.