The invention discloses an absorbent for reducing trace metal content in deteriorated oil, which has been used in an electrical power system, and a production method thereof. The absorbent has the characteristics of non-toxicity, and combustion and explosion resistance, has the advantages of simple production technology, wide raw material sources, low production cost, environment-friendliness, good processing effect on waste oil, and high yield, is capable of saving a large amount of production cost for enterprises, and saves energy for nation.