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Edge moisture imbalance is the root cause of various edge defects in finished paper and roll paper. In the papermaking drying and finishing process, the paper edge contacts more circulating air and loses water faster than the middle area, resulting in obvious transverse moisture difference. Unbalanced edge moisture leads to dry and hard paper edges, loose middle structure, edge warping, wavy edges and edge shrinkage inconsistency. During high-speed rewinding, slitting and printing, unbalanced edge moisture will cause edge paper breakage, feeding deviation and uneven lamination edges. In seasonal humidity changes, edge moisture difference will further expand, triggering batch edge deformation quality fluctuation. Most paper mills adjust drying air volume and temperature to balance moisture, but it is difficult to achieve microscopic edge-middle moisture consistency, and the improvement effect is unstable and easy to recur. Shandong Ludao Energy Technology Co., Ltd. launches professional edge moisture balance optimization solutions. By adjusting paper edge hydrophilic and hydrophobic micro-structure, synchronizing edge and middle water volatilization speed, we eliminate transverse moisture gradient difference. The solution realizes full-page uniform moisture distribution, completely solves edge dryness deformation and warping problems, stabilizes roll paper forming quality, and improves the qualification rate of post-slitting and printing processing.