二维倾斜地形影响，主要使ＴＭ极化模式的视电阻率降低。数值模拟结果证明，倾角小于１０°时，地形影响可以忽略，随着倾角的增大，地形影响急剧加强。同时，倾斜地形影响与周期有关，周期愈长，影响愈甚，而且，当倾角增大时，开始出现显著影响的周期提前。利用带地形均匀半空间与水平均匀半空间的电磁响应，计算出校正系数，进而可以消除或降低地形影响。 Two-dimensional tilt topography affects the apparent resistivity of the TM polarization mode mainly. The numerical simulation results show that the topographic effects are negligible when the dip angle is less than 10 °, and the terrain effect increases sharply as the dip angle increases. At the same time, the effect of slope topography is related to the period. The longer the period, the greater the impact. Moreover, when the angle of inclination increases, the periods with significant influence begin to advance. The correction coefficient is calculated by using the electromagnetic response with a half-space with uniform topography and a horizontal half-space, which can eliminate or reduce the impact of the terrain.