The invention provides a rolling method of a hectometer-level Ni-5at.%W alloy base band used for a coated conductor, and belongs to the technical field of metal material rolling. The rolling method integrates advantages of a two-roller rolling mill and advantages of a four-roller rolling mill, the two-roller rolling mill is used for cogging and middle rolling, the four-roller rolling mill is used for final rolling, the problem of processing difficulty of final rolling of the two-roller rolling mill or cogging of the four-roller rolling mill or the like is solved, production efficiency can be improved, and loss of the rolling mills is reduced. Meanwhile, the four-roller rolling mill is used for final rolling, the thickness of a strip rolled by the four-roller rolling mill is evener than that of a strip rolled by the two-roller rolling mill, the strip is good in shape, and mass in the rolling direction is even. First-time rolling in each step of three-step rolling uses the 10-20% rolling reduction, and requirements for surface roughness of a roller in the three steps are gradually improved during rolling. According to the rolling method, equipment in existing manufacturing enterprises can be utilized to the maximum extent, products having high additional value are produced, production efficiency is improved, the yield is increased, loss of the rolling mills is reduced, and requirements for industrial production are met.