The invention relates to the technical field of cloud platform storage virtualization, in particular to a general magnetic disk utilization rate obtaining method based on a heterogeneous storage virtual machine. The method comprises the steps that a block file is created in heterogeneous storage in a unified mode, and the virtual machine is created based on the block file; then, a virtual machine list and an adopted storage equipment list are obtained; the storage equipment is filtered; then, a block path of the storage equipment is obtained; finally, the magnetic disk utilization rate is obtained. The problems that the cloud platform obtained magnetic disk utilization rate is not general enough, an obtaining method is complex, the magnetic disk file system is likely to be abnormal, the performance is poor, and virtual machine operating systems and magnetic disk partition formats need to be partitioned are solved, and the method can be used for obtaining magnetic disk utilization rate data.