The present invention relates to the field of food processing and particularly relates to an intestine moistening and bowel relaxing yogurt drink and a preparation method thereof. Every 500 ml of the yogurt drink consists of the following raw materials in parts by weight: 3-8 parts of dragon fruit peel soluble fiber powder, 2-7 parts of banana superfine powder, 2-5 parts of mango peel superfine powder, 2-5 parts of carrot residue dietary superfine powder, 1-3 parts of apple residue dietary superfine powder, 1-3 parts of celery residue dietary superfine powder, 1-2 parts of cucumber residue dietary superfine powder, 0.5-3 parts of fructo-oligosaccharide, 1-5 parts of green-skinned sugarcane juice, 2-5 parts of kiwi juice, 10-25 parts of low-fat milk powder, 2-3 parts of white granulated sugar, 1-5 parts of honey, 0.05-0.3 part of xanthan gum, and the balanced being water. The prepared intestine moistening and bowel relaxing yogurt drink is rich in a variety of dietary fiber enriched raw materials, can effectively improve the content of dietary fibers in drinks, and has functions of improving functional constipation and smoothing bowel movement.