there is no man-made interference factors in the Bostick' inversion, the basic characteristic of the electrical section can be well reflected, it is often used as a real-time processing at the scene and to be build the initial model of indirect inversion, because the data has certain dispersion, But derivative operation is particularly sensitive for this dispersion, So before doing the inversion should be do in advance with the measured data, this can make the result to be more ideal, Compared with the inversion results of before and after data preprocessing, demonstrated the Bostick, the optimized data inversion can provide with better initial reference model for accurate inversion of MT data, Promote the use of value.