The invention discloses nutritious sprouted glutinous coarse rice flour and a preparation process thereof. The nutritious sprouted glutinous coarse rice flour comprises 50-80% of sprouted glutinous coarse rice flour, 10-30% of buckwheat flour, 5-10% of bean flour and 5-10% of sesame flour; and the preparation process comprises the following steps of: sprouting at a selected proper temperature, spraying a mixed solution containing CaCl2 and monosodium glutamate during the sprouting operation to promote the enrichment of gamma-amino butyric acid (GABA) in sprouting, and finally, obtaining the nutritious sprouted glutinous coarse rice flour with GABA content of up to 20-40 mg/100g, thereby supplementing the nutritious ingredients such as GABA and the like in the rice flour. The nutritious sprouted glutinous coarse rice flour plays roles in reducing blood pressure, improving brain function, calming nerves and promoting long-term memory; after being baked and cured, the nutritious sproutedglutinous coarse rice flour product has intense rice incense and good pasting performance and anti-caking performance. Due to the adoption of the nutritious sprouted glutinous coarse rice flour, the varieties and designs of the glutinous rice flour are enriched, and the utilization rate and the additional value of the glutinous coarse resources are increased.