Selenium-rich elderberry solid beverage

The invention discloses a selenium-rich elderberry solid beverage, which belongs to the technical field of solid beverages, and comprises the following raw materials: selenium-rich corn flour, a sweetening agent, dietary fibers, elderberry powder, fruit powder and probiotics. Respectively crushing the selenium-enriched corn flour, the sweetening agent, the dietary fiber, the elderberry powder and the fruit powder, and then respectively sieving; drying the selenium-enriched corn flour; uniformly mixing the dietary fibers, the elderberry powder and the fruit powder to obtain mixed powder; uniformly mixing a sweetening agent, selenium-enriched corn flour and the mixed powder, then adding probiotics, and mixing by using a three-dimensional motion mixer, so as to obtain the selenium-enriched elderberry solid beverage. The selenium-rich corn flour is rich in a large amount of organic selenium, so that the bioavailability is relatively high; the sambucus williamsii powder is rich in anthocyanin, has strong free radi