The invention discloses a production method of rutin-enriched tartary buckwheat beer, belonging to the field of fermented foods. According to the production method, 40% of tartary buckwheat is added as an auxiliary material, the tartary buckwheat and barley malt are separately fed, the tartary buckwheat is fed to a mash copper at 90 DEG C to rapidly inactivate rutin degrading enzyme, and therefore, the decomposition of rutin is avoided; by utilizing general saccharifying equipment, beer production equipment and processes and only adjusting a saccharifying process, the operation is simple and feasible; the 10-degree P tartary buckwheat beer produced by virtue of the production method is tan, and compared with general 10-degree P beer, the taste is slightly bitter but can be accepted; and the rutin content of the 10-degree P tartary buckwheat beer is 220mg/L, so that the dietary therapy health efficacy of the rutin-enriched tartary buckwheat beer is guaranteed.