Italian vegetable soup is a simple and delicious soup. First, you need to prepare 2 cups of onion, 1 cup of tomato pieces, 2 cups of tomato juice, 3 cups of vegetable soup, 2 teaspoons of sea salt and pepper. Then, put the onion and tomato pieces into the pot, add a little oil and stir-fry until fragrant. Then, add tomato juice and vegetable soup, cook until the soup boils, and then add sea salt and pepper to taste. Finally, put the soup into a bowl and you can taste Italian vegetable soup at home.