Provided is a business system load balance method in intelligent automatic control. A virtualization technology of x86 virtualization architecture is applied, a monitoring platform is set up, and the method includes the three main steps of clustering load balance, collecting performance data and monitoring load balance, wherein in the first step of clustering load balance, a web server load balance mechanism in the apache+mod_jk mode is adopted, load balance clusters of a business system are deployed, and a load balance scheme is set; in the second step of collecting performance data, performance collectors of node servers of the load balance clusters are deployed, and the performance data are collected in real time. According to the method, allocation of resources can be achieved without any human intervention, and resources can be efficiently utilized.