The invention discloses a condiment sauce formula for eating roast pork and a preparation method of the condiment sauce. The condiment sauce for the edible roast pork is prepared from tomato leaves, ginseng rootlets, carrot leaves, atractylodes flowers, small-leaf ku-ding-cha, towel gourd flowers, folia perillae acutae, grape leaves, locust tree flowers, honeysuckle, edible cactus, dry red pepper, minced garlic, Laoganma hot sauce, thick broad-bean sauce, soybeans, peanuts, white sesame seeds, green prickleyash, red bean fermented bean curds, lemon juice, bruised ginger, fresh cut scallion, caraway, white granulated sugar, sesame oil and special soup. The method is simple and easy to implement, the condiment sauce is indispensible to eating of roast pork, original taste generated when the roast pork is eaten is maintained, the roast pork is mellow in mouthfeel and free of grease, appetite of eaters is increased, the effects of clearing away heat and toxic materials, cooling blood, conducting facial care, preventing and treating arteriosclerosis and constipation, dispelling the effects of alcohol and the like can be achieved after the condiment sauce is eaten for a long time, and the condiment sauce is relatively ideal and suitable for being applied and popularized.