Method and system for specifying virtual hard disk type in cloud platform

The invention provides a method and system for specifying a virtual hard disk type in a cloud platform, and belongs to the technical field of virtualization engines. The method comprises the followingsteps: initiating a cloud host creation request, creating a front-end UI (User Interface) of a cloud host, and adding a parameter for identifying the type of an adapter into a request body on an original creation cloud host API (Application Program Interface); enabling the cloud platform rear end to extract parameters, and judging whether the adapter type is supported by the cloud platform rear end or not according to the parameters; when the cloud platform rear end is in butt joint with a virtualization engine, converting the adapter type into a data structure understood by the virtualization engine, and associating a virtual hard disk with the adapter to complete cloud host creation; and after the cloud host is successfully created, enabling the cloud platform rear end to store the adapter type information in t