Method and device for discovering micro cell

The invention discloses a method and a device for discovering a micro cell. The method comprises the following steps that: a base station of a macro cell triggers micro cells in a nonactivated state to send specific signals and triggers user equipment (UE) to receive the specific signals sent by the micro cells; the base station receives information of the micro cells which are discovered and determined to be reported by the UE according to the received specific signals; and the base station selects part of or all of the micro cells from the micro cells determined by the UE and configures part or all of the micro cells into quasi service micro cells of the UE. By the method and the device, the effect that in a wireless communication system heterogeneous network, the UE in the macro cell can discover the micro cells in the macro cell and a network side can select the suitable micro cells for the UE to provide services; and both the network side and the UE can be ensured to be effective and energy-saving by the mechanism disclosed by the invention.