The embodiment of the invention provides a method and device for executing application codes through a hard disk, and relates to the technical field of storage. By adopting the method and device, thehard disk can support a mode of adopting the application codes from the exterior of the hard disk for accessing the hard disk, so that the performance of the hard disk is improved, and therefore the interaction capability between a client side and the hard disk is improved. The method includes the steps that the hard disk receives the application codes and an execution strategy of the applicationcodes; the hard disk determines whether or not it is required to execute the application codes in the environment of a virtual machine according to the application codes; if yes, the hard disk executes the application codes in the environment of the virtual machine according to the execution strategy of the application codes.