With the rapid development of digital printing technology, old digital printing paper (ODP) become a new waste paper resource, which has triggered more and more attention on the wastepaper utilization industry. In this study, orthogonal experiment and single factor experiment was used to analyze the influence of deinking agent, addition agent, flotation time, curing time and curing temperature on the ODP neutral deinking technology. The results showed that the optimum neutral deinking conditions for ODP was deinking agent of 0.5%, emulsifying agent (OP-10) of 0.5%, sodium dodecylbenzene sulfonate (SDBS) of 0.1%, curing temperature of 70 °C, curing time of 15 min and flotation time of 6 min. At the same time, under the optimum neutral deinking conditions for ODP, the brightness of deinking pulp reached the maximum value of 99.3% SBD and the pulp yield of ODP reached to 76.8%.
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