The invention provides a PaaS platform load balancing method based on a consistency hash strategy, and belongs to the technical field of cloud computing platforms. The method comprises the steps: collecting the state information of a connected IaaS platform through a PaaS platform, and constructing a mapping node corresponding to the IaaS platform through the consistency hash strategy. Meanwhile,the method reduces the hotspot problems of access, and a virtual machine node is constructed according to the weight of the IaaS platform. The method avoids the load unbalance of each virtualized environment.