Bamboo fiber (natural bamboo fiber, also known as bamboo raw fiber) is a new kind of plant fiber, which is different from chemical bamboo viscose fiber (bamboo pulp fiber, bamboo charcoal fiber). As a basic material with excellent performance, bamboo fiber can be widely used in the production of composite materials such as textile, nonwoven, building materials and automobile materials. The development of lightweight reinforced composites is an important trend to achieve lightweight. Nevertheless, the cost of commonly used carbon fiber reinforced composite material is high. Although the glass fiber modified composite technology is the most mature, there are some limitations, such as low toughness, high brittleness, high mechanical wear, high energy consumption, easy water absorption, coarseness, non-degradation, and difficult to be disposed. It is found that the bamboo fiber composite prepared with the natural environment-friendly bamboo fiber as the reinforcing material has the characteristics of low density, high modulus and high strength, which is very suitable for the lightweight of automobile parts. Compared with traditional composite materials, bamboo fiber composite materials are lighter in mass, less in energy consumption, and emit very low carbon throughout their life cycle, which is more in line with the requirements of "green environmental protection and low carbonization" in modern society.