The invention relates to a load balance scheduling method based on virtual machine migration. The load balance scheduling method comprises the steps of performing hotspot detection on all nodes, and determining the minimum number of the nodes to be migrated according to a bin packing problem if hotspots emerge; and constructing a migration cost model, determining a migration scheme with the least cost, migrating virtual machines according to the migration scheme with the least cost, and eliminating the hotspots to implement load balance scheduling. According to the load balance scheduling method, the hotspots which cannot be eliminated by a heuristic method can be eliminated; the global virtual machines are rearranged through dynamic migration, and the hotspots are eliminated; furthermore, the global optimization is achieved.