Low frequency wide band SAR/GMTI has the capabilities of reconnaissance, surveillance and imaging for stationary and moving targets in the area open or concealed by foliage. A low frequency wide band SAR/GMTI system, developed by National University of Defense Technology, was introduced in detail as well as the information processing procedures. Important issues in the procedures such as spectrum correction, imaging and channel equalization were discussed. Three GMTI methods-STAP, DPCA combined with ATI and image domain STAP-were chosen in consideration of the low frequency property in the system. It is verified through the outfield experiment that the system can effectively suppress clutter, detect moving target and estimate its motion parameters.