Laser radar can provide the four-dimensional image of target (intensity image and three-dimensional range image).The clutter in the complex background is easily segmented in the searching and monitoring process. It can improved the space between the aspect of target detection and recognition. Because of the limitation of hardware, traditional laser radar is difficult to meet the requirements of high frame-rate and wide field of view (WFOV). A design scheme is presented by using the streak tube imaging lidar (STIL) with high detection sensitivity as the detector of searching and monitoring, and then the corresponding experiment equipment is built. 45° WFOV imaging is completed using the 532 nm YAG laser which pulse energy is 20 mJ. The experimental results show that the complex scene 4-D images with far-distance and WFOV are collected by using STIL, and it contribute to full-coverage and unleak pixels imaging. It has good application foreground.