The invention discloses a deploying method and system of a virtual machine system. The method includes the steps that corresponding operation system template files and software template files of software under an operation system are selected respectively according to the requirement of the operation system and the software of the virtual machine system to be established, the software template files and the operation system template files are copied and combined on virtual disc space which is newly built, combined mirror image files are formed, the combined mirror image files are operated, the virtual machine system is established, so that the operation system template files and all the software template files are combined as required, and the virtual machine system needed by a user is established. According to the deploying method and system of the virtual machine system, customization and deployment of virtual machines can be achieved flexibly, fast and efficiently as required, and the personalized virtual machine system is obtained.