The work of kernel transplantation has practical application value and the configuration more complex tasks. So this paper comes up with a new method of kernel updates on the basis of the kernel itself characteristics. Most of the existing kernel transplantation methods need to complete with the module init-tools, mkinitrd, lvm2 and device mapper and other tools, external tools are abandoned in this paper. It is to achieve the new kernel updates and its strategy is on the basis of the kernel protection characteristics. First of all, for kernel configuration, we analyze the necessary module configuration. Then it uses the command interface to the kernel of modularization compile and grub analysis. Again, in view of the robustness requirements for the kernel, the kernel is realized with the MD5 algorithm which can improve the mechanism of protection. Finally experimental research show that the kernel transplantation method is convenient and practical, and the improved protection mechanism of the kernel has important application value.