Abstract: A method for a host computer to access a target device via a remote extender. The target device is connected to the remote extender, and a target device driver corresponding to the target device is installed on the host computer. The method includes setting up a logic transmission pipe between the host computer and the remote extender with a network connection as the underlying transmission path, and handling an I/O request from the target device driver to access the target device via the logic transmission pipe. The method is used to allow the target device to be treated by the host computer as a local resource. Additionally, the disclosure provides a system for accessing the remote target device and a remote extender thereof.