Aiming at the problem of how to eliminate the interference of the data collected by the six-component balance in the wind tunnel test, a processing method combining EMD algorithm with wavelet transform is proposed.Considering the interference components that may be contained in the data from the perspective of the design of the balance, the time-frequency relationship between the interference components and the data is given, and the rationality of the method is theoretically explained.The data is restored by simulation test, and the error is compared with that of the traditional interference elimination algorithm.It is verified that the method has higher accuracy.Finally, the real six-component balance data is processed to further prove the practical feasibility of the method.