Abstract: The succeed application of the digital encoded technology in the radar,the medical aspects make it possible to use this technology in the seismic detection.In order to introduce the digital encoded technology to seismic detection,the simulation study on coded excitation in rock property imaging carried out.Firstly,we introduce the principles of coded ultrasound imaging and the characteristics on the coded technology.Secondly,through the excitation of Golay codes,ultrasound imaging of the rock property testing has been completed using Field Ⅱ package and compared the simulation result.The results proved that encoded technology is the effective method improving the image quality.The results can be used to guide the seismic detection in the field.