The transfer matrices of the axial, flexible and torsional modes of fluidconveying elbow pipe are deduced considering fluidstructure interaction between pipe and fluid. Calculate the modal frequency and shape of a “U” shape pipe with Transfer Matrix Method and ANSYS software respectively. The results indicate that Transfer Matrix Method is an effective way to analyze fluidconveying pipe. The effect of fluidstructure interaction can not be ignored which will depress the modal frequency of the pipe.

With the development of cryogenic technology, cryogenic liquid products are important in many fields. As representative for fluidconveying tools,pipes are widely used in industry fields. But fluid structure interaction in working liquidfilled pipes, and the vibration characteristic in cryogenic fluidconveying pipes, which have been extensively studied in the academic and engineering communities. In this paper, the typical achievements in the research field were summarized and reviewed.