The invention discloses a red oil radish with a mulberry flavor and a preparation method of the red oil radish. The red oil radish is prepared from the following raw materials in parts by weight: 2-3 parts of dried kelp powder, 2-3 parts of chinensis tea powder, 5-6 parts of mulberry pulp, 20-25 parts of camellia oil, 1-2 parts of schisandra chinensis, 1-2 parts of semen cassia, 15-17 parts of pod pepper, 1-2 parts of seed powder of Chinese prickly ash, 1-2 parts of chopped green onions, 1-2 parts of chicken powder, 2-3 parts of white sugar, 110-120 parts of fresh radish and a proper amount of edible salt, calcium chloride, vitamin C liquid, tea water, sodium diacetate, nipagin complex esters, pectin methylesterase and water. The preparation method comprises the following steps: mixing and rubbing the dried kelp powder and the mulberry pulp; adding the chinensis tea powder and drying to obtain powder; and mutually mixing the dried kelp powder, the mulberry pulp and the chinensis tea powder. The red oil radish is abundant in taste and diverse in nutrient; a yellow pigment is reduced by blanching, and the quality of the radish is well kept; and the edible salt, the calcium chloride, the tea water and the vitamin C liquid are added, so that the brittleness is improved, and the content of nitrite can be well reduced.