The interaction of the pulse electromagnetic field with human body using the Finite-Difference Time- Domain（FD-TD） method and the inhomogeneous block human body model is discussed in this paper. To verify the validity of the method

the first step is calculation of the currents induced in the infinite long dielectric circular cylinder expoused to pulse EM wave. Then the currents induced in 2D and 3D inhomogeneous block human body models under the expouse of unclear EM pulse are calculated. The current versus time and the current distributionof the whole body model are calculated too. The influence of the medium dispersion isn’ t considered

it’ s a further research problem.