The invention provides an edible garlic extract without allicin and a preparation method thereof. The edible garlic extract does not contain allicin, but contains alliin, protein, amino acid, polysaccharide, and four major nutritional elements: Potassium, calcium, magnesium, sodium, five trace elements: iron, copper, zinc, selenium, chromium; wherein, the content of alliin is 0.17%-10%, the content of protein is 5%-18%, The amino acid content is 2.6%-7.8%, the polysaccharide content is 40%-68%, the four major nutritional elements are not less than 538.6 mg / kg, and the five trace elements are not less than 25.06 mg / kg. The product quality of the garlic extract of the present invention is obviously better than that produced by the existing process, has no garlic smell, white color, high content of active ingredients such as alliin, protein, amino acid, polysaccharide, four major nutritional elements, and five trace elements. Used in food additives, beverages, health food, medicines.