In this paper, the regional double-layer indoor high-precision positioning system based on Ibeacon network is studied. 3 circle positioning and centroid positioning algorithms are commonly used indoor positioning algorithms. However, due to the wireless signal in the process of indoor transmission will have a certain attenuation. Therefore, there will be some errors in these positioning algorithms. In this paper, the positioning error is reduced by filtering out the equipment information with large error, and then an improved multi circle positioning algorithm is proposed based on the three circle positioning. At the same time, the weighted centroid algorithm is added to the improved positioning algorithm, which can effectively improve the positioning accuracy. Compared with the traditional positioning algorithm, the improved positioning algorithm can limit the positioning error within 4 m. Compared with the traditional location algorithm, this algorithm is more stable. Finally, the paper gives the experimental simulation of the improved algorithm. With the help of Ibeacon equipment, the system obtains the distance between the current position and Ibeacon anchor. Through the simulation experiment, the improved algorithm of direction control is added, which performs well in the area block.