Because the bicycle is driven by the driving force and riding skills of the human body, the frame becomes an important structure to bear the impact load generated by the bicycle during driving and whether it can carry the human body comfortably and safely. The manufacturing accuracy of the frame components will directly affect the safety, stability, and lightness of riding. Generally speaking, the spokes are of equal diameter. In order to reduce the gravity, they are also made into variable-diameter spokes with large ends and small middle, and they are also made into flat streamline spokes to reduce the air resistance.

The frame component is the basic structure of the bicycle, and also the skeleton and main body of the bicycle. Other components are also directly or indirectly installed on the frame. There are many structural forms of frame components, but they can be divided into two categories: men's frame and women's frame.