Guava, also known as guava, is a tropical fruit tree, native to tropical America and now cultivated in Yuanjiang. Guava is a small evergreen tree or shrub of Myrtaceae, commonly known as Guava Seed and Nadamura. Guava is one of the famous subtropical fruit varieties because it comes from abroad. Guava has strong growth adaptability, does not choose soil and is easy to cultivate. Mature fruit is light green, fragrant and delicious. Guava has thin skin, yellow-green color, thick flesh, sweet crispness and few seeds in the heart. The fruit is rich in nutrition and contains high vitamins A, C, fiber and trace elements such as phosphorus, potassium, calcium and magnesium. In addition, the fruit is rich in protein and lipids.