The embodiment of the invention provides a virtual desktop generating method, device and system, and relates to the technical field of networks. The virtual desktop generating method, device and system can reduce operation time delay when a thin client side is connected in, and the transmission efficiency of application data flow can be improved. The method comprises the steps that a proxy server establishes connection for a client side and a virtual desktop server, and generates the applications obtained from a virtual desktop to a proxy desktop and transmits the proxy desktop to the thin client side; the application operation requests sent by the client side are received, wherein the application operation requests contain address information of resources related to the applications; resources are obtained from the nearest resource storage node according to the application operation requests to update the proxy desktop, and an interface is generated and sent to the thin client end. The virtual desktop generating method, device and system are applied to the network applications of the thin client side.