The invention relates to a moisture removing structure for a corrugated board. The structure is characterized by comprising an enclosed box, a first heating roller and a second heating roller, wherein the enclosed box is arranged on a composite channel of a corrugated board production line; the first heating roller and the second heating roller are arranged on the composite channel of the corrugated board production line through bearings. The structure has the advantage of simplicity, compactness, rationality, convenient installation at an arbitrary position, convenient operation and regulation, low energy consumption, difficult loss of heat energy, high heat energy utilization rate, and capability of removing moisture from the corrugated board in a stable temperature environment so as to fulfill the aim of energy saving and easy control only by installing the enclosed box on the conventional composite channel.