A regenerated processing box, the processing box comprising a powder cabin (1) and a waste powder cabin (2) which are mutually connected, the powder cabin (1) comprises a powder cabin shell body (10), and the waste powder cabin (2) comprises a waste powder cabin shell body (20). The processing box is regenerated by using the following method: step a, disassembling the processing box; step b, cleaning the powder cabin shell body (10) and waste powder cabin shell body (20); step c, adding a new developer to the powder cabin shell body (10), and; step d, reassembling the processing box. The processing box, by means of regeneration, allows a processing box at the end of printing service life to be reused, thereby saving on resources.
