The invention provides a method and device for measuring enhancement in a wireless communication system. The method comprises the steps of obtaining measuring quantity according to measurement period or through event trigger, wherein the measuring quantity comprises the ratio between valid signals based on reference signals measured based on the reference signals and invalid signals based on the reference signals; reporting the measuring quantity to a base station; or conducting cell selection or cell reselection according to the measuring quantity. Alternately, the method for measuring enhancement in the wireless communication system comprises the steps of receiving the measuring quantity reported by the UE, wherein the measuring quantity comprises the valid signals based on the reference signals measured based on the reference signals and the invalid signals based on the reference signals; conducting inter-cell interference coordination or cell switching decision according to the measuring quantity. By means of the introduction of newly increased measuring quantity, the UE is assisted in conducting cell selection or cell reselection. The UE sends the measuring quantity to the base station, switching decision or interference coordination is conducted to an auxiliary base station, and thus the communication performance of a network is improved.