A computer device, a system, and a load balancing method are provided. A load balancing virtual machine is created on the computer device. When load balancing processing needs to be performed on a service of a virtual machine of the computer device, a related service packet is sent to the load balancing virtual machine of the computer device, so as to perform load balancing processing, thereby avoiding a processing delay caused by congestion of centralized load balancing. In addition, when a computer device is faulty, a virtual machine of the computer device goes offline accordingly, and a load balancing requirement is not generated any more. Therefore, when a fault of a single computer device causes a fault of a load balancing virtual machine, there is no service interruption that is caused by active/standby switchover because of the fault of the load balancing virtual machine.