Resource scheduling method and system for PaaS cloud platform

The invention discloses a resource scheduling method for a platform as a service (Paas) cloud platform. The method comprises the following steps of: detecting the load condition of each child node by a management node in the Paas cloud platform; and redeploying the child nodes, the loads of which exceed a threshold value and which are deployed with application of maximum load overhead, to the child nodes, the loads of which are lightest and which are not deployed with the application. The invention also discloses a resource scheduling system for the Paas cloud platform. According to the scheme, the application service quality can be ensured during resource scheduling, the signaling overhead of application copy migration is reduced, and load balance of the Paas cloud platform is realized.