Cloud computing implementation method and system

The invention discloses a cloud computing implementation method. By multilayer load balancing architecture design, a plurality of virtual machines with totally same functions are deployed in an application layer, a middle layer and a database layer, and fault monitoring modules are respectively deployed on the virtual machines; when one virtual machine has a file system read-only fault and the like, the fault monitoring module automatically turns off the virtual machine to realize automatic isolation of a virtual machine node, and reports the fault information to a management center; the management center migrates the access request of the virtual machine having the fault to the other corresponding virtual machine; and the fault or the deletion of any main virtual machine does not cause pause on the current service system, so that the fault of a single main virtual machine can be prevented from affecting the whole cloud computing platform, the smoothness of services is ensured, and the user experience and the performance of the whole system are improved. The invention also discloses a cloud computing system.