Starting from the calculation formula for transient electomagnetic response of vertical magnetic couple source at the surface of horizontal layered media and in accordance with the interchange principle, this paper worked out a very useful forward calculation formula for device of induced electromotive force measured by coil within the range of field angleθon both sides of the perpendicular bisector (with emission from couple pole source), and calculated transient electromagnetic response of couple pole source in horizontal layered media by using M. M. Goldman's mixed algorithm. The result proves the advantage of the mixed algorithm.