In view of the limitations of using a single positioning technology in specific scenes,such as the low indoor accuracy of Beidou positioning technology,a composite high-precision positioning technology based on Beidou positioning and Bluetooth is proposed in the paper.Using Bluetooth AOA technology,indoor positioning is achieved by calculating the distance between the device and the target by receiving the strength of the arrival signal and the loss of the known execution path,using the signal arrival angle to calculate the target direction,and using the distance and direction information to calculate the target position.The Beidou satellite positioning data and Bluetooth AOA positioning data are converted to the same coordinate system through the rotation matrix,and the positioning information of the two is fused in multiple scenes through BP neural network to achieve high-precision positioning in the whole scene.