Abstract: In the process of bifurcation finite element structure analysis,the selection of element type,the selection of mesh density,the selection of model range,the simulation method of head and support,the boundary constraint conditions and other factors have certain influence on the calculation results and the analysis conclusion. Through a systematic analysis and study of the above factors,the basic provisions for the finite element structure calculation of buried crescent ribbed bifurcation pipe are put forward,which can be used as a reference for the finite element structure analysis of crescent ribbed bifurcation pipe.