Abstract: To solve the problem of truss hanging in the Yellow River crossing in West-to-East Gas Transmission Pipeline Project in flood season, "Suspending & Hanging Process"is used.In the paper, the prophase preparation of hanging tools, hanging tools'allocation, relative auxiliary facilities and mechanical property of truss during sending are introduced.It is proved that in the Yellow River crossing in West-to-East Gas Transmission Pipeline Project, the"Suspending & Hanging Process"is available to solve the technical difficulties in truss hanging in flood season.