Abstract: For optimizing the control system of the steel-wire napper,an embedded control system was developed,which use ARM platform implanted with the μC/OS-Ⅱ real time multitask kernel as the control centre and realize the control of the 6 separate motions of the napper through the RS-485 bus.Meanwhile,it is capable of making rapid response to the user′s request and various malfunction signals.The article gives the electric organization chart of the whole control system,describes the hardware and software configuration control system of the control board,and analyzes the performance of the system in practice.The test and probation shows that equipped with the embedded control system,the steel-wire napper exhibits excellent performances,and it is worthy of promotion for wide applications.