The invention relates to a nutritional balanced vegetarian diet which is characterized by comprising components A, B and C. The component A comprises brown rice, fragrant rice, black rice, cooked brown rice, glutinous rice, oats, sorghum, millet, corn, soybeans, black beans, red beans, white beans, mung beans, peanuts, sesame seeds, barley, apple, banana, mango, orange, strawberry, tomato, carrot, pumpkin, celery, konjac, broccoli, cabbage, mushroom, undaria pinnatifida, seaweed, lily, green tea and pueraria. The component B comprises lecithin, oligosaccharide alcohol prebiotics, and rice bran. The component C comprises nutritional yeast and probiotics. Compared with the prior art, the nutritional balanced vegetarian diet provides all the essential nutrients to the human body.