The invention provides a detection method and device for a detection signal. A base station sends detection signal DCI (Downlink Control Information) through a wireless frame of a licensed frequency point, thereby informing all UE (User Equipment) which resides at the licensed frequency point and is in a DRX (Discontinuous Reception) state, of carrying out quality detection on the detection signal. All UE is informed of carrying out the quality detection on the detection signal through the wireless frame, resources of the licensed frequency point are saved, and a utilization rate of licensed spectrum resources is improved.