The invention relates to the technical field of storage virtualization, in particular to a method suitable for a storage pool resource mapping rule of a distributed storage system. According to the method, firstly, a storage pool mapping rule is acquired; then the storage pool mapping rule is edited; the storage pool mapping rule is set; data migration of the storage pool mapping rule is explained; finally, the storage mapping rule takes effect. With the adoption of the method, the problem about resource allocation of storage pools of the distributed storage system is solved, a user can dynamically divide different storage pools according to performance difference of storage objects, a customer can create virtual machine system disks different in disk read-write performance through different storage pools, and requirements of different customers for storage resources are met. The method can be used for creating system disks and cloud disks of a virtual machine supporting cloud calculation.