In order to satisfy the requests of industrial camera with high resolution in national defense and industry, imaging circuit is designed for the large target CMOS detector CMV20000. The main functions and characteristics of CMV20000 detector chip are introduced, and the driving of detector control signal and the receiving of high speed LVDS serial image data are realized with the help of FPGA. Dynamic phase adjustment technique is used to correct the phase of 16channel LVDS high speed serial data, the synchronous receiving and high speed serial to parallel conversion of imaging data are realized. The received image is restructured and exported through the CameraLink port. Functional verification is done for the imaging system with the use of testing image, and imaging experiment is done with the actual scenery. The consequence of the experiment shows that the output frame of system is as high as 30 fps, and the SNR of image is about 35 dB, which satisfies the indicator demands of imaging quality.