The minimum Linux system, which is running on the embedded system whiout interface building by the Linux kernel. Through the minimum system establishment and transplantation, it is helpful to grasp the basic method of system transplantation and programming. According to the Cortexa9 framwork designing of the Exynos4412 platform, Building crosscompiler environment and some related software is introduced, paper focus on the the kernel source code and Busybox compiler and the flow of the transplantation, the main steps of transplant and main instruction were also introduced. The test code has been programmed to show the performance of the Cortexa9 and minimum Linux system. The experimental results show that million times the division operation time spend about 0.19s, which can meet the performance requirements of most embedded systems.