The invention discloses a pulping pretreatment method of waste labels on beer bottles. The method comprises the following steps: putting waste labels into a low-rotating-speed pulping pan, and adding a proper amount of caustic soda to decolor the waste labels; washing with clear water to enable the pH value to be lower than 8; and pulping in a high-rotating-speed high-concentration hydraulic pulper within 50 minutes to reach set beating degree and whiteness. Compared with an existing process requiring 3 hours for treatment, the method has the advantage that the pulp has the beating degree of 38-400SR and whiteness of more than 80 degrees in less than 30 percent that of the existing process, and can be used for providing raw materials for high-grade household paper, so that the utilization value of waste labels on beer bottles can be greatly improved.