Abstract: A device and a method for remote wake-up are provided. The device for remote wake-up includes a processing element and a network module, wherein the network module includes a connection module, a receiving module, a determination module, and a wake-up module. In the method for remote wake-up, a local host firstly logins a network server. Then, the local host maintains connection with the network server after entering a suspend mode, and thereby the network position of the local host is determined. Thereafter, the local host receives a network packet and determines if the network packet is a network wake-up packet transmitted from a remote client and through the network server and. When the network packet is a network wake-up packet, the local host returns to normal operation mode.