According to the problem of seamless steel pipe rolling mill production line, both sides of the hydraulic position servo system the inside different parameters and external interference caused by roller depressed position inconsistent synchronization, we designed the hydraulic position servo control system based on fuzzy output feedback synchronization, and prove the stability of the control system in theory. Simulation results show that hydraulic position servo control system based on fuzzy output feedback synchronization not only has short synchronization time but also has smaller error, when in the case of the differences both sides of the rolling mill inside the parameters and external disturbances.