There are many factors to affect the helicopter TEM exploration accuracy and resolution in the actual exploration.We used the MAXWELL software to do the forward modeling to discuss the characteristics of AeroTEM system by changing the horizontal distance of the anomalous body and changing of the anomalous body angle and changing of abnormal body depth to analyze the influence of the electromagnetic response curve.The results show that the helicopter timedomain airborne electromagnetic system has a high lateral resolution and good electromagnetic responses of abnormal body morphology.