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Burst strength loss is a major quality flaw for heavy-load packaging board and outer carton paper. Affected by recycled fiber degradation, unstable fiber bonding, uneven pressing and fluctuating workshop humidity, finished paper often suffers from insufficient and unstable burst resistance. During heavy goods loading, high-pressure stacking and extrusion transportation, paper surface is easy to burst and crack, leading to packaging rupture and commodity damage. Many paper mills increase wood pulp proportion blindly to improve burst index, which directly raises raw material cost, squeezes profit margin, and cannot solve periodic burst strength fluctuation caused by production environment changes. Conventional strengthening agents only improve single tensile strength, with limited promotion effect on comprehensive burst resistance. Shandong Ludao Energy Technology Co., Ltd. provides targeted burst resistance reinforcement solutions. By optimizing three-dimensional fiber cross-linking structure, filling internal micro gaps, and enhancing radial and axial fiber joint force, we comprehensively upgrade paper anti-burst capacity. The solution does not raise wood pulp consumption, resists strength fluctuation caused by humidity change, stabilizes batch burst index, reduces packaging burst damage, and helps enterprises produce low-cost and high-strength heavy-load packaging board.