The invention relates to a server remote desktop management technology, and discloses a method for achieving a Web Console out-of-band management system. The management system comprises a power supply management module and a remote management module, wherein the power supply management module controls the power supply function of a server in a Web / Xterm manner, and the remote management module manages a Linux server in a Console manner. The method comprises the following steps that 1, an apparatus is connected with the out-of-band management system, for acquiring apparatus information and storing in the Web service; 2, a link is formed between a VNC and the apparatus, related information is acquired from the Web service, and then a VNC port is connected; 3, the Web service calls a guacamole project to transmit the VNC data to the front web to manage the power supply; and 4, when the user closes the page or an abnormality occurs, the abnormality is captured by the guacamole. According to the above steps, the management on the remote desktops and the management and control on the power supplies of the services from different manufacturers can be achieved without considering the different kinds of out-of-band software of the different manufactures, and thereby the Web Console out-of-band management system is achieved.