The invention belongs to the technical field of food processing, and in particular relates to lutein-containing salad sauce and a preparation method thereof. The lutein-containing salad sauce comprises the following raw materials in parts by weight: 2 to 4 parts of lutein oil suspension liquid, 50 to 100 parts of mustard oil, 2500 to 6000 parts of vegetable oil, 2000 to 4000 parts of water, 200 to 1000 parts of whole egg liquid, 100 to 400 parts of concentrated fruit juice, 100 to 700 parts of acetic acid, 20 to 200 parts of aginomoto, 20 to 150 parts of salt, 300 to 1000 parts of a sweetening agent, 0.5 to 10 parts of a preservative, 100 to 800 parts of an thickening agent, 0.5 to 10 parts of an antioxidant and 50 to 100 parts of an emulsifier. The lutein-containing salad sauce provided by the invention is exquisite, viscous and high in stability, the appearance is pink, the product can reduce the loss of the lutein in the production process through reasonable formula and proper process, and the product has good color, taste and high stability within the shelf life.