Dislocation of joints refers to constitute a joint articular surface from the normal position and lose the normal correspondence. Joint dislocation，a common joint disease，early diagnosis accurately is the key point to ensure that patients could get the best treatment. In recent years a growing number of studies have shown that ultrasonic examinations play a significant role in making clear and definition of the situation of joint injuries，as well as observing adjacent tendons and nerves，and the clinical guidance for rapid，accurate reduction. In this paper，the research progress of the correlation between ultrasonic examinations and dislocation of joints in recent years were reviewed.