The invention discloses normal-temperature composite oil removing adsorbent for selenium-enriched metal plating pretreatment. Each litre of the normal-temperature composite oil removing adsorbent is prepared from, by weight, 2.5-3.4 parts of isomeric alcohol ethoxylates, 2.9-3.4 parts of FMES, 1.9-2.4 parts of coconut diethanol amide, 0.5-0.8 part of sodium hydroxide, 3.3-3.6 parts of sodium citrate, 2-4 parts of coconut oil, 0.5-0.8 part of potassium ferrate, 0.4-0.6 part of oxalic acid, 1.2-1.5 parts of aluminum silicate fiber, 3-4 parts of attapulgite, 6-8 parts of selenium-enriched wheat straw, 1-2 parts of guar gum, 2-3 parts of sweet potato starch and a proper amount of water. According to the normal-temperature composite oil removing adsorbent for selenium-enriched metal plating pretreatment, isomeric alcohol ethoxylates and FMES are added into raw materials in a composite manner, high-adsorbability mixed filler is added, other effective auxiliaries are compatible, and the prepared novel metal oil removing agent integrating oil removing, corrosion prevention and filtration is rich in selenium, free of toxicity, phosphorus, pungent smell and residue, low in foam, capable of being completely biodegraded and high in oil contamination removing capacity.