The invention belongs to the field of recovery technology of unqualified products from nuclear fuel preparation process and specifically relates to a recovery method of unqualified powder from the MOXpreparation process. The method comprises the following steps: calculating required unqualified MOX powder, introducing cooling water and mixing; analyzing uranium plutonium content, impurity content, granularity, specific surface area, apparent density and O/M; carrying out chemical dissolution recovery treatment on unqualified powder with elevated level of heavy metal impurities; treating powder with volatile impurity content or unqualified O/M by selecting a corresponding sinter boat according to required treatment quantity and internal space of a calcining furnace and uniformly laying unqualified powder into the sinter boat, introducing Ar-H2 gas mixture into the calcining furnace, regulating H2 content according to O/M, slowly heating, carrying out thermal insulation, and cooling thecalcining furnace to room temperature after thermal insulation; and treating MOX powder with unqualified uranium plutonium content by adding UO2 or PuO2 powder according to the uranium plutonium content analysis result to regulate the uranium plutonium content of the powder. According to the invention, effective utilization of unqualified powder can be realized.