Abstract: When the vibrating specimen magnetometer (VSM) user kit of physical property measurement system (PPMS) produced by Quantum Design is used for the magnetic measurement, it is usually shown that the MultiVU software cannot feedback the correct position parameter due to different kinds of test samples. Through the analysis of the automatic feedback the process, it was found that there was a percentage value corresponding to the feedback magnetic signal of the sample obtained from the determined non-optimal position and the real value of the optimal position. According to the convenience of getting the position parameter by the strong magnetic signal in high field, examples were given to illustrate a method for the data correction without adding the background field, which was performing normal testing and extrapolating percentage values for samples with incorrect automatic feedback position parameters, and then using the percentage values for data correction. The method can ensure the reliability of measurement data, reduce unnecessary waste of time, and improve the test efficiency.