In order to investigate the discipline of induced eddy propagation in surrounding rock underground wholespace and the functional relation between the response of transient electromagnetic underground wholespace, wall rock resistivity and time, the authors computed the response of wholespace by using numerical simulation. The relation between the response and the resistivity of the wall rock was obtained by fitting the response curves of nine surrounding rocks drawn at the same time. The relation between the response and the time was obtained by fitting the response curves with time at the late stage. The ratio between the amplitude of the wholespace and that of the halfspace was obtained by comparing their amplitudes. The results show that the radius of the eddy ring maximum in the wholespace is smaller than that in the halfspace projected on the surface. The radius of the response decays with 1.5 powers to the resistivity of the wall rock, the response decays with 2.5 powers to the time, and the amplitude of the wholespace is 1.94 times that of the halfspace.