Abstract: A design of a 3rd generation image intensifying charged-coupled device camera ( ICCD) was proposed that could operate under high-speed gating. A gated control circuit was designed which was used for the photocathode of a 3rd generation image tube, so that the ICCD could image effectively under a highspeed gated state. After analysis and comparison, a relay lens was designed which had a Bi-Gauss complication optic configuration. The high transmissivity and high modulated transfer function ( MTF ) were achieved on image coupling. A digital CCD and a digital frame capture circuit with an embedded image process module were used. The correlative software about the image process was accomplished , so that the image of ICCD was presented fast. As a result of the design, the 3rd gated ICCD can operate with a 3.3 ns gated width and its spatial resolution is 600 TVL.