Based on the comparison method of 2015 model and zone model,the applicability of model in four aspects including reduced travel time,typical earthquake,blasting and collapse,and PTD source depth measurement was tested. The inspection results show that the random selected events are located in the middle of the reduced travel time theory line with the partition model. The positioning residual of typical events,blasting and collapse obtained by using the zoning model was significantly lower than that of the 2015 model,and the epicentre difference of "three regions-cataloging" was significantly lower than that of "2015-cataloging". The measurement of PTD source depth by using zone model is more consistent with the distribution characteristics of zone crust thickness in Inner Mongolia. The partition model is basically consistent with Crust1.0,Crust2.0 and Moho thickness distribution results obtained by using the receiving function. It is concluded that the one-dimensional crustal velocity model in the west,middle and east of Inner Mongolia is more consistent with the regional geological structure characteristics of Inner Mongolia.