Abstract: With the development of network computing, distributed system has been widely used and deeply researched. It is a critical problem to increase the utilization efficiency of resources and the answer speed of tasks by using effective load balancing scheduling strategy. After a comprehensive review of existing works in load balancing field of distributed system is given, this paper summarizes a general load balancing scheduling model, analyses the factors related to load balancing in detail. This general model is testified efficient in the actual model proposed and implemented by ours.