The invention relates to a fruit and vegetable solid beverage with the function of regulating the intestines and stomach and a preparation method thereof. The solid beverage is composed of the following components in parts by weight in terms of dry weight: 20 to 40 parts of freeze-dried probiotic powder, prebiotics 10-30 parts, 30-60 parts of fruit and vegetable extracts, 10-20 parts of yam polypeptide powder, 10-20 parts of brown sugar. It is made by washing, peeling and pitting the fruits and vegetables first, then chopping them, adding citric acid aqueous solution to homogenate, then steaming under high pressure, filtering, adding prebiotics, yam polypeptide powder, and brown sugar to the filtrate, boiling at 80°C, cooling, and adjusting pH, filter, add probiotics to the filtrate, dry under reduced pressure, pack and store. The solid beverage of the present invention is rich in nutrition, has a reasonable formula, does not add any artificial additives, is natural, safe, stable, effective, has a good taste, has a uniform taste, and has a long shelf life. Play a role in regulating intestinal function.