Based on the analysis of spud loads under the combined action of wind, wave and current, this paper puts forward the method which combines programming calculations with finite element analysis on the spud dynamitic response in the wind, wave and current environment, i.e., gaining the spud loads under the combined action of wind, wave and current through programming calculation at first and then obtaining the dynamitic response of the spud by finite element analysis. The results from this method agrees well with the real case, so it may serve as reference for safe construction of cutter suction dredger.