In the bleaching of waste paper pulp, hydrogen peroxide is helpful to the removal of ink particles. When it is used in the bleaching of waste cardboard (OCC) pulp, the yield loss is small, and it can improve the brightness of OCC pulp and improve the color of pulp, which is conducive to environmental protection and reduces the cost of wastewater treatment. Li Dong's research showed that H-bleached 0CC pulp can effectively improve the brightness of the pulp while improving some physical properties of the fiber. The physical properties of the bleached pulp, such as ring pressure index, tear index, burst index, are improved compared with the OCC natural color. Wang Huajie studied the hydrogen peroxide bleaching of waste paper deinked pulp after a period of flotation, and obtained the best technological conditions for H bleaching of waste paper deinked pulp. Chen Jia discussed the effect of TAED activator on hydrogen peroxide bleaching of waste paper pulp. The results showed that TAED activator could improve the brightness and stability of paper, and the physical strength of bleached pulp was also improved. Yang Li studied the effect of two biological enzymes, catalase and horseradish peroxidase, and three transition metal ions, Cu2+, Fe2+and Mn2+, on the white of waste peroxide. The experimental results showed that with the increase of the amount of biological enzyme added, the whiteness and residual hydrogen peroxide of waste pulp decreased, indicating that after the addition of enzyme, the ineffective decomposition of peroxide increased within a certain period of time. Through the kinetic study of hydrogen peroxide decomposition catalyzed by transition metal ions, it is found that temperature plays an important role in hydrogen peroxide decomposition. Zhang Shubin. studied the effect of paper fillers on hydrogen peroxide bleaching of waste paper pulp. The results showed that different fillers and their amounts in the pulp had different effects on the bleaching effect of peroxide paper