The paper introduces the principles of VIRE algorithm and BVIRE algorithm for indoor location. On the basis of BVIRE algorithm, the paper proposed an improved algorithm based on the weights of the neighboring reference tags (Referred as WBVIRE algorithm). The new algorithm is reset the calculation method of the weights of neighboring reference tags by improving the difference of RSSI between the positioning reference tags and the neighboring reference tags. Then the system calculated a more accurate coordinates to be positioned tags and made better the indoor location accuracy of BVIRE algorithm. Experimental results show that the WBVIRE algorithm significantly improves the indoor location accuracy.