The Embedded System is a very popular study-feild nowadays, the earlier times taking MCU as core more, applying-field is very extensive.But MCU system function is more simple,hard to be suit with the rapidly developing of modern technique.With the increasingly mature of FPGA, SOPC'Embedded System is be pay attention to by more and more people.Especially the soft core of Nios II that company of Altera release, by the method of software weave distance can carry out the Embedded System function vividly, and carry on the function to FPGA excellent turn, can raise the system function consumedly.It still has the function of adjusting on chip, easy to adjust and design the system.With the technical development of chip, the SOPC becomes a development trend of embedded system design, differing from the table operation system, the embedded operation system needs to carry on transplanting and cutting according to particular embedded application and different processor.Aim at more and more currently developping according to the Nios system, analyzing the new generation Nios structure characteristics .Hence I had a thought to transplant the operation system of μ C/ OS- II to the SOPC. The purpose of this topic is with the UC/OS-II operation system as a object, carry out the transplantation in the SOPC soft core processor Nios. I studied the related manual and relevant English datas of the NiosII, working well the record, and controled the process of the development gradually, and with the iterative experiment and adjusting, in the end caming ture the UC/OS-II'transplantation and the application on the SOPC.