The invention discloses a rice wine brewing process, in particular to a sweet rice wine brewing process. It includes the steps of material selection, rice washing, soaking, cooking, saccharification, alcoholization and wine pressing. The invention adopts three brewing techniques of distiller's yeast and koji applied in stages, and completely solves the characteristics of traditional sweet yellow rice wine such as low yield, low alcohol content and simple taste due to incomplete saccharification and alcoholization. The sweet yellow rice wine of the present invention is made from the raw materials of the following components, and the parts are parts by weight: 5000 parts of brown glutinous rice, 30 parts of traditional distiller's koji, 15 parts of self-made fragrant wine koji of traditional Chinese medicine, and 9 parts of live fermented dry yeast of yellow rice wine. Its production process includes raw material processing, cooking, saccharification and fermentation, wine fermentation, pressing and aging, and sterilized packaging. The rice wine prepared by the invention has the characteristics of light yellow and transparent color, mellow smell, sweet and sour taste, soft and moist, and endless aftertaste. The wine contains various amino acids and various trace elements.