The invention provides a cholesterol type supramolecular gel lubricant and relates to the technical field of lubricants. The cholesterol type supramolecular gel lubricant provided by the invention comprises the following components in percentages by mass: 90.0 to 99.0% of basic oil and 1 to 10.0% of a gelator, wherein the gelator is a compound formed by cholesterol and sodium 2-ethylhexyl sulfosuccinate and the mole ratio of the cholesterol to the sodium 2-ethylhexyl sulfosuccinate ranges from (0.5 to 1) to (1 to 2). The gel lubricant provided by the invention is low in cost and small in toxicity, and has good friction reduction and anti-wearing performance and a high bearing capability; the problems of leakage, creeping and the like of lubricating oil can be prevented; and meanwhile, thegel lubricant has good thermal stability and mechanical stability, and can be used for lubricating mechanical parts for processing foods. The invention provides a preparation method of the gel lubricant. The preparation method provided by the invention is extremely simple and low in cost and large-scale production is easy to realize.