This　paper　deals　with　large　deflection　problem　of　a　cantilever　beam　with　a　constant　section　under　the　action　of　a　transverse　tip　load.　The　differential　transformation　method　(DTM)　is　used　to　solve　the　nonlinear　differential　equation　governing　the　problem.　An　approach　treats　trigonometric　nonlinearity　is　used　in　DTM.　The　results　obtained　from　DTM　are　compared　with　those　results　obtained　by　the　finite　difference　method　and　they　agree　well.