The invention discloses dryness-moistening bowel-lubricating low-fat yolk sauce, made from the following materials according to parts by weight: 18-20 parts of fresh chicken eggs, 27-28 parts of oat dextrin, 2-3 parts of fish skin collagen, 8-10 parts of water, 1-2 parts of garlic oil, 1-2 parts of chickpea dietary fiber, 40-44 parts of soybean salad oil, 1.8-2 parts of edible vinegar, 1-1.2 parts of refined salt, 1-1.2 parts of white granulated sugar, 0.3-0.36 part of mustard, 0.36-0.4 part of white pepper, 0.18-0.2 part of ginger powder, 0.08-0.1 part of vanillin, 3-4 parts of tea, 12-14 parts of minced mung bean, 1-2 parts of baijiu, 6-7 parts of eggplant juice, 0.9-1 part of basil seed, 1-1.5 parts of Radix Astragali, and 2.5-2.6 parts of Radix Angelicae Sinensis; the oat dextrin is used to replace part of salad oil, fat replacement ratio is 27.9%, and under such condition, the viscosity of the low-fat yolk sauce is 105% higher than that of the whole fat yolk sauce, and energy value thereof is 16.5% lower than that of the whole fat yolk sauce.