A time focus and time collimation system is presented in this paper. It consists of time focus system, time collimation system, streak tube, pulse generator and CCD. Time compression ratio of the system to electron beam is measured. While gradient of the focused pulse is 800 mV/ps, measured time compression ratio is about 3.4∶1. Relationship between time compression ratio and gradient of the focused pulse is obtained. The measured results show that time compression ratio increases with the increase of the gradient of focused pulse.