To provide a method for producing chemical pulp, in which metals can effectively be removed from pulverized cellulose fiber materials (for example, wood chips) before a bleaching process.

This method for producing the chemical pulp, comprising treating a cellulose material with steam, slurries the treated cellulose material, impregnating the slurry with a cooking liquid at a temperature of ≥90°C, simultaneously or then extracting metals (for example, by the use of a continuous cooker), thereby removing about ≥30% of Mn, and then adding a chelating agent (for example, EDTA) to the left liquid in an amount of 0.05 to 10 kg/ton of dry cellulose, for example, at the first step of the cooking process. Thus, the chelating agent binds to the metal ions released in the slurry to produce metal complexes. The metal complexes are substantially removed before a bleaching process.