The invention relates to the technical field of articles of daily use, in particular to an oil detergent. The oil detergent comprises the following raw materials in parts by weight: 8 to 12 parts of acrylic acid, 6 to 10 parts of alkyl phosphate, 6 to 10 parts of sodium alkylarysulfonate, 4 to 8 parts of trishydroxyethyl methyl quaternary ammonium sulfate, 4 to 8 parts of lauryl sodium sulfate, 2 to 6 parts of sesame oil, 1 to 5 parts of tea tree oil and 80 to 120 parts of deionized water. The oil detergent disclosed by the invention has the advantages of reasonable formula, capability of effectively removing edible oil, engine oil or other oils on clothes, good oil removing effect, high oil removing ability, less foam, no damage to the clothes, low production cost, no irritation, no toxicity, and no harm to the skin, human body and the environment; the oil detergent meets the requirement of environmental protection and can be widely suitable for cleaning velveteen clothes, fiber clothes, silk clothes and the like.