Study on optimization of the accuracy of navigation in walking posture corrector, in view of the lack of accuracy of the current attitude calculation technology, this is a design scheme of embedded stance posture correction in Linux environment. Based on a priori iteration method of correcting equation coefficients of position magnetic moment, an iterative error index function and an iterative formula are established, and numerical simulation experiments are carried out. In order to detect the attitude angle in real time, the integration of data collected by sensors is proposed including acceleration, angular velocity and magnetic field strength. The accumulated error of the integration is corrected by using the vector deviation of the three-axis acceleration sensor and magnetometer. The sensors transmit the final data results to the computer and mobile APP via the ZigBee and Bluetooth protocols to achieve the purpose of walking posture detection and correction. By the actual measurement results, the design improves the accuracy of walking position correction and strengthens the performance of real-time detection.