The invention relates to the technical field of articles for daily life, in particular to a multipurpose oil stain detergent. The multipurpose oil stain detergent is prepared by using the following raw materials in parts by weight: 8-12 parts of acrylic acid, 8-10 parts of alkyl phosphate, 6-10 parts of sodium alkylarysulfonate, 4-8 parts of tris(hydroxyethyl)methyl quaternary amine methylsulfate, 4-8 parts of lauryl sodium sulfate, 2-6 parts of tea seed powder, 1-5 parts of tea tree oil, 0.2-0.6 part of chitosan-graphene composite material and 80-120 parts of deionized water. The multipurpose oil stain detergent provided by the invention has the advantages that the formula is reasonable, edible oil, engine oil and other oil stains on clothes, metal parts, oil smoke exhausting stoves, tile walls, plastic materials and the like can be effectively removed, the stain removing capability is strong, the foam is less, the clothes, metal parts and the like are not damaged, no irritation and toxicity exist, skins are not injured, no harm is caused to human bodies and environments, and the environmental protection requirements are satisfied.