Abstract: The structural integrity of safe end dissimilar metal weld (DMW) during the lifetime is of significance to the safety operation of nuclear power plant. The austenitic coarse grain material and complex geometry configuration of DMW weld make the examination of dissimilar metal weld very challenging. In this paper the ultrasonic examination technique of dissimilar metal weld is reviewed and summarized, including code inspection requirement, technique characteristic of the abroad vendor, limitation of inspection technique, reliability and inspection qualification etc. The series of theoretical and experimental research showed that the inspection reliability of dissimilar metal weld could be improved continually and it seems a little difficult for accurate examination and reliable evaluation for defect located at position between the weld and buttering, which require further thorough theoretical research and application of new method and technique.