The　problem　of　variable　cross-section　beam　carrying　a　moving　heavy　load　is　investigated.　UG　software　is　used　to　build　a　three-dimensional　model　of　the　beam.　The　finite　difference　method　and　finite　element　method　are　used　static　analysis　for　the　variable　cross-section　beam　carrying　a　moving　heavy　load.　The　static　deformation　of　the　beam　guide　surface　is　obtained.　Comparing　the　data　of　the　two　method,　the　feasibility　of　the　method　is　verified.　This　paper　give　a　guide　surface　load　curve　research　method　of　variable　cross-section　beam　carrying　a　moving　heavy　load.　©　(2014)　Trans　Tech　Publications,　Switzerland.