The main food sources of protein are divided into animal protein and plant protein. Foods containing animal protein mainly include dairy products, eggs, fish, meat, such as lean beef, animal liver, eggs, duck eggs, milk, goat’s milk, yellow croaker, shrimp skin, etc., which are rich in essential amino acids required by the body and belong to high-quality protein, which is also known as complete protein. Plant protein is mainly contained in legumes and cereals, and legumes such as soybeans, black beans, and soy products such as tofu and soy milk also contain complete protein. However, some cereals, such as flour, rice, corn, millet, etc., as well as collagen in animal skin and bones, are called incomplete proteins due to the lack of essential amino acids, which are not high-quality proteins. The protein content in fruits is relatively small and is not the main source of protein for the human body, but among them, compared to other fruits, fruits with high protein content are avocado, kiwi, coconut, grapefruit, peach, dragon fruit, apple, banana, orange, fig, etc. In addition to replenishing protein, it can also replenish the vitamins and minerals needed by the body, and eating in moderation can also quench thirst, laxative and diuretic.