Presently Linux is a popular operation system at home and abroad , which employs an open and developed model. This would greatly enhance abilities on software operation and exportation , and especially has great business capacity to the software development of china. This article analyses its technical characteristics of Kernel in the light of the strong and stable operating system of Linux , and also introduces some promoting ways to the kernel and whole process. Some matters needing attention are also presented. All of those would provide some references to learn and use Linux.