The invention discloses non-full-nutritional liquid food based on tamarind polysaccharide and belongs to the field of special medial food. The non-full-nutritional liquid food is prepared from the following components in percentage by mass: 0.2%-0.35% of the tamarind polysaccharide, 0.15%-0.3% of xanthan gum, 2%-12% of erythritol, 2%-10% of resistance dextrin, 1%-15% of nutrition components, and the balance of water. Both the erythritol and the resistance dextrin contain lots of hydroxide radicals, and are freely soluble in water, in addition, the resistance dextrin contains lots of branch chains, and intermolecular gaps are large; the erythritol and the resistance dextrin easily form hydrogen bonds with the tamarind polysaccharide and the xanthan gum in water, and dissolution of the tamarind polysaccharide and the xanthan gum is accelerated; the viscosity of the non-full-nutritional liquid food is adjusted synergistically to a certain extent; and the viscosity of a product is suitablefor eating by dysphagia patients, product stability is good, the score of sensory evaluation of the product is high, and the non-full-nutritional liquid food can serve as standard food of the dysphagia patients.