Abstract: For the localization of WSN based on distance, the distances between neighbor nodes often contain various disturbances from the environment. In order to attenuate the effect of disturbance for the localization accuracy, an updating algorithm is proposed in which the beacon nodes near the unknown nodes and satisfying some distance requirements will be utilized to regulate the position obtained from the weighted localization methods. It is shown from simulation results that the proposed method is simple and can effectively reduce localization errors.