Poaceae plants have strong adaptability and are easy to promote and plant. Its grains are rich in nutrition and easy to store and process, which is one of the reasons why it can occupy a major position in the modern grain structure. In daily life, staple foods such as rice and Mantou are very common. The raw materials used to process these foods almost all come from grasses. Poaceae is a family of monocotyledonous plants in the Poaceae order, also known as the Poaceae family. It includes more than 600 genera such as wheat, corn, rice, barley, rye, and at least 10000 species of annual or perennial herbaceous plants. Their main characteristics are upright plants, narrow leaves, well-developed rhizomes, easy tillering, and fast growth and development. Grain crops such as wheat, corn, rice, millet, oats, sorghum, etc. are typical grasses of the Poaceae family. On the road to becoming an important source of staple food, grasses have undergone a long process of evolution and selection. In the long-term process of species evolution, wild species have gradually formed grass family plant types that can be grown as food for humans through natural hybridization, natural duplication of genetic material, and natural selection caused by abnormal climate and environmental stress. One of the reasons why grasses occupy a dominant position in the modern food structure is that their grains are rich in nutrients. Taking wheat grains as an example, they contain protein, starch, trace elements, dietary fiber, etc. Its glutenin subunit makes the dough have excellent elasticity and extensibility, which can be used to make noodles, Mantou, bread, deep-fried dough sticks, etc. Rice grains (rice) contain protein, carbohydrates, fats, and other organic compounds such as phenols, aldehydes, and alcohols, which make rice fragrant and become the main staple food in many regions of China. In addition, grasses have strong adaptability and are easy to promote and plant. Its seeds are easy to store and process. Poaceae plants have a wide distribution range, strong stress resistance, and rich genetic diversity, so they can be planted in different types of environments and achieve ideal yields. For example, wheat is drought resistant and cold tolerant, rice is flood tolerant, heat tolerant, and transplant tolerant, corn is heat tolerant, barren tolerant, drought resistant, and has high light energy utilization efficiency, and foxtail millet, sorghum, and oats are salt alkali tolerant, barren tolerant, drought resistant, and have strong photosynthetic abilities. These traits have laid the foundation for the large-scale promotion and cultivation of excellent varieties. (New Society)