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Uneven edge stiffness is one of the most overlooked quality defects in batch papermaking production. Compared with the middle area of paper sheets, paper edges suffer from fast moisture loss, insufficient fiber accumulation and weak inter-fiber bonding, which lead to low edge stiffness, soft edge, edge bending and edge sagging in daily production. This defect is prominent in high-speed machine production, recycled pulp paper and large-width cultural paper. Soft edges will cause edge winding deviation during rewinding, edge fold damage during slitting, and automatic feeding failure in printing machines. Many paper factories adopt extra edge sizing to improve edge hardness, which will cause edge brittleness, increase chemical consumption, and create hardness difference between paper middle and edges, failing to realize uniform whole-page stiffness. Long-term unbalanced edge quality will raise trimming waste volume, reduce finished product yield, and bring unstable processing experience to downstream customers. Shandong Ludao Energy Technology Co., Ltd. launches targeted edge stiffness balancing solutions. By adjusting edge pulp distribution, optimizing edge moisture retention and strengthening local fiber bonding, we improve edge compactness and hardness, keep consistent stiffness from paper center to edges, and eliminate soft edge and bending problems. The solution will not cause edge brittleness, does not change original paper hand feel, reduces trimming loss, stabilizes slitting and printing processing, and ensures uniform whole-page physical quality of finished paper.