The invention discloses donkey-hide gelatin yellow wine and a preparation method thereof belonging to the technical field of a wine preparation method. The donkey-hide gelatin yellow wine is technically characterized by being prepared from the following raw materials in parts by weight: 94-99 parts of yellow wine, and 1-6 parts of donkey-hide gelatin. The preparation method is technically characterized by comprising the following steps of: (1) stewing; (2) warming and saccharifying; (3) fermenting; (4) carrying out filter pressing to prepare a sweet yellow wine base; (5) respectively weighing the yellow wine and the donkey-hide gelatin according to the weight parts, broiling the donkey-hide gelatin in the yellow wine base, cooling the yellow wine base to room temperature after the broiling, and performing after-ripening and clarification on the cooled yellow wine base which is filled into a wine jar; (6) adding the residual donkey-hide gelatin to the clarified yellow wine base in a broiling ceramic jar to be broiled, cooling the yellow wine base to room temperature, and sealing and cellaring the cooled yellow wine base; (7) sequentially carrying out filtering, filling and sterilization on the cellared yellow wine base; and (8) sterilizing and packaging the yellow wine base to obtain the donkey-hide gelatin yellow wine. The donkey-hide gelatin yellow wine provided by the invention has the beneficial effects of good mouth feel, high nutrition and good health-care effect.