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Aiming at wireless sensor network nodes use of RSSI is easily affected by the external environment, and considering the fact that some anchor nodes are affected by the environment in the actual positioning process, the accuracy of itself is poor and even not cannot locate. A quadrilateral weighted centroid localization method based on RSS ranging correction is proposed. First, using the Gauss filter to remove the large fluctuation of the RSSI value, and use the method of weighted median filter RSSI value calculation, get the corrected RSSI value; secondly in order to reduce the weight of a single anchor node using weighted quadrilateral localization method. Finally, the experiment shows that the positioning accuracy is improved and the performance is stable.