Being one of the effective geophysical investigation techniques in engineering and environment,electromagnetic (EM) survey has been well developed in these years. New EM instruments have been continually introduced into underground tube detection, underground water pollution monitoring and subsurface building detection and evaluation. With the purpose of filling in the blank area where the traditional EM methods and the ground penetrating radar (GPR) can not be applied effectively, frequency domain electromagnetic (FEM) instruments make use of frequency bands, in which the diffusion and displacement currents cannot be ignored, and the bit stream transmit technique. Time domain electromagnetic (TEM) instruments are shifted to the very early time of the off time electromagnetic responses. The detection resolution and efficiency can be improved by the new EM instruments. The electromagnetic integrated demonstration (EMID) at the Idaho National Engineering Laboratory Cold Test Pit in USA shows the present status and development trend of the modern EM instrumentation.