The invention belongs to the technical field of food processing, and discloses a fungus fiber diet solid beverage as well as a making method and application thereof. According to the formula, the solid beverage relatively balanced in nutrient structure is designed according to big data of nutriology, three big nutrients in a normal balanced diet are maintained, wherein carbohydrates account for 60% of gross calorific power, protein accounts for 25% of the gross calorific power, fat accounts for 15% of the gross calorific power, and besides, mineral elements and vitamins are complemented according to the normal balanced diet; and specific raw materials of the solid beverage comprise cane sugar, crystallization levulose, funguses, straw mushrooms, shiitake mushrooms, soy protein isolate, redbeans, soybeans, brown rice, oat, chenopodium quinoa, mulberry leaves, amaranthus hypochondriacus leaves, walnuts, apricot kernels, olive oil powder, tea-seed oil powder, psyllium husk powder, konjac, resistant dextrin, fructo-oligosaccharide, complex mineral elements and composite vitamins. The product namely the solid beverage has the functions and effects of assisting in reducing weight, reducing blood lipid, reducing blood sugar, reducing blood pressure, promoting lead discharge, dispelling acne, regulating intestinal flora, promoting digestion, easing constipation and the like.