The present application discloses a method and a device for transmitting and receiving a signal. In the embodiment of the present application, a network side device sends a wake-up signal over a first object, where the wake-up signal includes information for instructing the terminal to receive and/or detect a downlink signal over the object, the network side device sends the downlink signal over the object, and the terminal receives and/or detects the downlink signal according to the information in the wake-up signal.