Abstract: To solve the problem of unbalancing resource load status in virtual machine cluster,this paper describes a load balancing strategy which based on live migration and combines multi-strategy mechanism with the prediction mechanism.It adopts different balancing strategys for different types of resources to make the system return to normal effectively,and uses the prediction mechanism to eliminate unnecessary migration caused by instantaneous peak,so it can reduce the frequency of virtual machine migration in traditional single threshold strategy.After triggering migration,it uses probability-weighted approach to select the target node,which resolves the problem of accumulation conflicts.Experimental results show that the method can achieve load balancing.