Abstract: The real-time online monitoring system of displacement of the end of rolled parts in Multi-wedge Cross Wedge Rolling (MCWR) was developed. It can measure the movement of the end of workpieces exactly in the course of single-wedge cross wedge rolling and MCWR. The regularity of movement of the end of workpiece was discovered by analysis in detail. The theoretical result is in agreement with the testing, with the error less than 17%, which demonstrates the accuracy and reliability in movement of the testing system.