Abstract: Ultrasonic technology is competent for testing material stress with speediness,accuracy and facility.In this paper,the theoretical study is made the ultrasonic stress measurement issues,and some experimental methods and practical applications of the measurement are compared and analyzed.The material feature extraction method based on ultrasonic technology is also expatiated.Furthermore,an experimental system for stress measurement is designed,and the developing prospect of ultrasonic techno-logy on stress measurement is described.