Abstract: The Huang gang Yangtze River railway-highway combined bridge adopted parallelogram section integral node, and the test details required by each welding line are conformed to its stress condition. The specific UT methods are drawn up on the basis of eight different special angle welding joints, and the normal probe and angle probe are used separately for the UT test. The accuracy of the test results was proven by practice. The test scheme meets the requirements of the technological specification.