Asynchronous downloading system and method

The invention provides an asynchronous downloading system and method, belonging to the internet field. The system comprises a mobile terminal and a control server, wherein the mobile terminal is used for sending a downloading request message to the control server by a mobile communication network; the control server acquires the downloading request message and detects the online state of a computer terminal corresponding to the mobile terminal after the downloading is confirmed; when the computer terminal is in an on-line state, the resources are controlled to be downloaded to the computer terminal; and when the computer terminal is in an off-line state, the resources are controlled to be downloaded to a net disk. In addition, the invention also relates to an asynchronous downloading method. The method comprises the following steps: according to the downloading request message, detecting the on-line state of the computer terminal, and when the computer terminal is in the online state, controlling the resources to be downloaded to the computer terminal; and when the computer terminal is in the off-line state, controlling the resources to be downloaded to the net disk. According to the system and the method, a user establishes the downloading by mobile communication means. Whether the computer terminal of a user is started, the asynchronous downloading can be realized at any time and any place.