Adopting the general finite element computation software to analyze symmetry Y-type reinforced concrete bifurcation pipe in Hydropower Station, this paper has calculated annular stress and distortion distribution of reinforced concrete bifurcation pipe, and analyzed the influence that indide hydraulic pressure has on bifurcation pipe wall rock. The computed result indicates that, using reinforced concrete bifurcation pipe is safe and reliable, and can satisfy the project. se computed result indicated.